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Question and Answer Page 57

Subjects

Reverse Osmosis water for our plants and fish how do you glue your caps the lettuce has yellowish roots.
cheep growing solution where the heck can I find 1" SDR-26 PVC? other methods to create co2
help with heating it in the winter, dirt seems to grow faster hydro can i use aquarium gravel as my medium
best vegetables to grow ph in my reservoir is always acid. tissue culture cloning?
My soda bottles are overflowing what is causing the yellowing of leaves? what plant will grow in this weather
Date:
10 Oct 2000
Time:
09:50:58

Comments

i have new sprouts, and the stems are long, when do i start to pinch the tops

After the third set of true leaves.

Date:
10 Oct 2000
Time:
09:53:11

Comments

We have been using Reverse Osmosis water for our plants and fish and have experienced trouble due to the inherent acidity of the RO water (pH 5.8). A company recommends using mined silica clay. What is it and where do I get some? I was told: "There is also another product on the market now that is supposed to work wonders with RO water. It is actually a mined silica clay that contains 72 micro-nutrients". Any comments or suggestions will be appreciated. Thanks, R. Mara rmara@blazenet.net

A pH of 5.8 is to low for fish but is perfect for plants. pH is the problem when trying to do both. 

Date:
12 Oct 2000
Time:
08:55:15

Comments

For the person looking for silica clay. I found what your looking for quite by accident. Go to: http://www.plantitearth.com/organics.html Its called "pyroclay"

Date:
10 Oct 2000
Time:
12:39:26

Comments

Hello Ron (or whomever can answerer my query) I just started out on my hydroponic quest and I was trying to find some cheep growing solution. I remember finding a place on the web that had some in dry form for only $5.00 or sow. But please give me any information you might have. I'm just a beginner.

The cheapest I have ever used is Nutri-sol but I can't find it anymore. So now I mix my own.

Date:
10 Oct 2000
Time:
17:11:00

Comments

Hello, my name is Ian. I have to do a science fair project at school, and I was thinking of doing something involving hydroponics (I'm not quite sure what to do, but I'd like to use hydroponics). If anybody could help me out with this (where to get hydroponic stuff, info. on hydroponics, etc.) it'd be greatly appreciated. If you could help me, my email is Malchori@aol.com Thanks! Ian

Date:
11 Oct 2000
Time:
08:18:55

Comments

Been busy building a list of on-line suppliers for us hobbyist. Lights, medium, nutrients & pumps. For lights go to www.hydroponics.net. The grow max jr mh is $154, the hps-$189. For water pumps go to graystonecreations.com. Cheapest anywhere. Nutrient is hard to figure out cause mixing ratios are different but if your looking for cheap, quikgrow.com has a 3 part solution for $6.00 per liter. Medium, depending on how much you need is $30 for 50ltr at futuregarden.com or hydroponics.net has the best price for a smaller quantity, 3.5 gallons for $10. I got all my supplies, except nutrient, from these people and am happy with all of it.

Date:
12 Oct 2000
Time:
05:26:24

Comments

The moisture probe will be used as a feedback to a controller to automate the hydroponic process. I plan on using the bag technique to grow tomatoes. I plan on using peat moss and perlite as the medium. My goal is to have the prob calibrated to keep the correct moisture level in the bag at all times.

I live in the Atlanta area and I see a niche market for tomatoes in the winter months. Caterers and fine restaurants are begging for good FRESH vegetables. My goal is to build a business growing hydroponic vegs. Any advice is welcomed. Joe

Date:
12 Oct 2000
Time:
07:25:46

Comments

Just curious. I have built a nine foot tall 14 x 20 ft greenhouse. I am getting ready to put on the plastic, and was wondering if I put black plastic on the lower 4 ft if that would help with heating it in the winter, or if it would cut off too much light. Does anybody out there have any idea?
Brett

As for temperature control I don't think it would make a measurable difference. 

Date:
12 Oct 2000
Time:
17:35:50

Comments

what is hydroponics

growing plants without dirt

Date:
12 Oct 2000
Time:
18:24:06

Comments

I love the sight, so in appreciation, and to keep this sight the last word on the subject, here's a bit of trivia.

The only song (as far as I know) ever to mention Hydroponics Is the Title song of Donald Fagan's (Steely Dan) Kamakiriad. The Song (whole album) is about a futuristic car and the lyric goes

It's not a freeway bullet or a bug with monster wheels It's a total biosphere The farm in the back is hydroponic Good fresh things every day of the year.

I take comfort in the fact that somebody in pop culture not only knows what it is, but that he knows that it's not just for growing the #1 cash crop.

Date:
13 Oct 2000
Time:
07:24:35

Comments

Where in the USA can I find hydroponic tomatoes and lettuce seeds? And the prices to those seeds? Cody Johnson Tarkio, Missouri P.S. If Any one wants to e-mail me about this matter my e-mail address is johnson_cody90@hotmail.com

Date:
13 Oct 2000
Time:
10:08:40

Comments

I am going to plant a garden and I live in North central Florida and would like to know the best vegetables to grow for the fall starting in the next few days

Cauliflower, spinach, cabbage, cucumber, eggplant, lettuce, and peas.

Date:
13 Oct 2000
Time:
13:23:14

Comments

I have been asked to give a report on hydroponic fertilizers and I need to know percentage wise how much nitrogen, Phosphorous, and Potassium should be in the fertilizer to best help plants grow. Val in MT

Date:
13 Oct 2000
Time:
20:16:18

Comments

What size pump should I use for a 2 plant garden. My soda bottles are overflowing but my overflow pipe vent hole is not shooting out any water.

try clamping the hose to cut down on the gph.

Date:
14 Oct 2000
Time:
19:47:43

Comments

ron, what kind of plastic are 2-liter bottle caps made of, and what will bond them to PVC fittings? how do you glue your caps and fittings together? (do they need to be sanded or ?) i've tried regular pvc cement and a clear 2-part epoxy but they keep coming apart..

The caps fits so tight just a little pvc glue holds mine fine. They are made from different kind of plastic that glue has a hard time sticking to.

Date:
15 Oct 2000
Time:
22:40:11

Comments

If I have 400w mh for vegetation, would 140w hps be enough added to the 400w mh for the flowering stage

Yes

Date:
16 Oct 2000
Time:
16:52:53

Comments

I'm a High School student, and I'm doing a science fair project on growing grass in hydroponics,and seeing which type of fertilizer works best. If yall could give me any info. about what types I should use and which types work best, I would appreciate it a lot! Thanks for yalls time! P.A.

Date:
16 Oct 2000
Time:
22:03:01

Comments

Hi from Victoria,Beautiful British Columbia,Canada. Whilst on a little trip to the USA I purchased a good light meter for growing my veggies and it is calculated in "foot candles" and "lux", however I have spent hours and hours trying to find out what optinum readings I should get for Lettuce,Tomatoes and Cucumbers, taken at the plant ! Please can you help me or tell who can. Thank you. Norman Howard Email: normanhoward@home.com

Date:
20 Oct 2000
Time:
16:18:07

Comments

HI Ron, where the heck can I find 1" SDR-26 PVC? I've called just about every plumbing supplier in the Baltimore area as well as some irrigation wholesalers. So far I'm lost, I guess I'll just have to get some from Pipe Dreams. Any other suggestions?

I guess you will. I'll send you all you need already cut 1 inch long for a few bucks.

Date:
20 Oct 2000
Time:
17:08:01

Comments

Hi Ron, I just noticed that you have the PVC called SLD.26 in the beginning of your 11 plant Setup page, and at the end of the slide show you have it as SDR.26 PVC. Which is the right one, and again, where can I get it if not from Pipe Dreams? Thanks.

It's SLD. 26 (schedule 26) 

Date:
20 Oct 2000
Time:
22:33:02

Comments

the numbers on the pipe probably don't make much difference, since they vary from manufacturer to manufacturer.... what you want is thin-wall 1" PVC. best thing to do is take a cap with you to the local PVC store and see what pipe it fits into. up here in washington they call it "sprinkler pipe" since people use it for underground lawn sprinklers. i just happen to have a stick of it here and here are the numbers on it:

1" CL 200 PSI SCS-430-DD PVC 1120 @ 73' F ASTM D2241 SDR 21 NSF-61 * &G27AYD29B MADE IN USA

again, i found it easier to take a cap with me and buy what it fit into...

yea what he said

Date:
21 Oct 2000
Time:
00:17:46

Comments

back to dirt it was nice at first then low water fert. burn next time pump burn out whats next back to dirt will still read your great site iv done tests & dirt seems to grow faster hydro no way you just have to judge for your self

All you have to do is watch as my tomato plants mature then you will have good idea how fast one can grow with hydroponics . Read the dates on the pictures as I post them everyday. Pictures don't lie. 
You can also watch them all die if we get an early freeze here in Florida before I get my greenhouse enclosed.

Date:
21 Oct 2000
Time:
00:35:26

Comments

Ron you should try growing in dirt i know its a dirty word your pop bottle set up is the best

dirt is to dirty

Date:
21 Oct 2000
Time:
06:48:46

Comments

Does anyone have the pdf file edition 2 of How-to-Hydroponics? This is one that used to be able to be downloaded, but required the Soft-lock key that you had to purchase before you were able to open the pdf file. I've managed to screw up my drive, and don't have a copy, and you can't download that version any more. I doubt that it has enough info to be worth another $20. And, I've already purchased the key to edition 2. Thanks for your help. Jim Bradley -- Maryville, MO USA (jbradley@msc.net)

Date:
21 Oct 2000
Time:
11:34:37

Comments

Please disregard my question regarding a copy of edition 2 of "How-to Hydroponics" that I'd posted earlier. I found a copy on an archive CD that I'd burned. Jim Bradley

Date:
22 Oct 2000
Time:
09:07:54

Comments

The ph in my reservoir (25 gal) is always acid. I'm using ph up like crazy. Changing the solution didn't help. After a few days it was acid again. I started using crushed coral. It's only been 1 day and the ph seems to be stabilized. The ppm is ok for now. What terrible things might happen?

If your pH is to high or to low your plants get lock out and can't utilize the nutrients in your solution. Thus your plants do poorly. 

Date:
23 Oct 2000
Time:
07:21:06

Comments

Hey folks, came across a great link for a TDS tester. It is a cheap one, and I don't know the quality, but it is like half the price as any others I have seen. Ron, or anybody else, let me know if this is a great deal. I really appreciate this site.....I now have built three hydroponic systems, and a greenhouse to put them in. It is a great hobby.

Brett

http://www.hannainst.com/products/testers/primo25.htm

Date:
23 Oct 2000
Time:
07:34:14

Comments

Hi, I have read of farmers in Canada growing plants in saw dust, can anyone provide any information? Thankx

Date:
23 Oct 2000
Time:
08:25:37

Comments

I would like to know if anyone has tried growing Okra using hydroponics and what the average yield might be. You can email me at wilkinson@intellex.com

I got four okra plants just starting. I will let you know how they do.

Date:
23 Oct 2000
Time:
10:45:56

Comments

hello ron, this is Bob from Newport, see you at bike week March-1st.Great page.

I didn't even make it to Bike-toberfest this year. Have to replace the motor that I blew up last year in my trike before March. I don't have no fun.

Date:
23 Oct 2000
Time:
22:28:45

Comments

In a eight sq meter room with co2 what is causing the yellowing of leaves? when ph is reading about 7 and cf meter is reading about 22?

Lower the pH to 6 or lower 5.5. 
22 might be high depending on how your flow meter reads. You can give plants to much co2.

Date:
26 Oct 2000
Time:
03:13:56

Comments

hello ron,

i notice that out of the 3 types of plants i have in my hydro system (namely, lettuce, rocket salad and basil ... all sharing one tank), the lettuce has yellowish roots.
this is my first time to encounter this. i have been doing hydro for months now. the only difference i could remember is that for more than 2 weeks now, i do not put any Chlorine in my solution. before, i make sure there are no less than 10ppm of Cl in my tank.
oh, if you are thinking that i do not change my water, well .... i do change my water. actually, my water evaporates so fast that i have to refill it every 3 to 4 days.
regards,
pzing email: freshfields@guest.sendit.se

Not sure but I wouldn't worry unless the roots turn brown and die.

Date:
27 Oct 2000
Time:
09:08:31

Comments

I am hoping that Bowie will have a Fresh Fields store one day soon. I realize there is a store in Annapolis, Md. I am hoping for something closer to my home.

Any plans to do this?

Date:
31 Oct 2000
Time:
01:47:34

Comments

has anyone ever grown using co2 from a source of baking soda and vinegar is there any other methods to create co2 for a small sealed grow area. thank you

co2 Enrichment

Date:
31 Oct 2000
Time:
19:17:40

Comments

For co2 enrichment methods go to

http://www.hydrofarm.com/content/articles/co2.html

Date:
31 Oct 2000
Time:
13:44:37

Comments

first off would like to compliment on the wonderful site. my question is i would like to start in hydroponics and i am planning on building the system out of two 5 gal. buckets can i use aquarium gravel as my medium or should i use clay, i want to grow bananas so any help with that would be helpful thanks

The more porous the medium the better.

Date:
01 Nov 2000
Time:
12:33:15

Comments

I'm doing a science fair project on hydroponics and it is very hard to find information on this topic. It would be very helpful if you could help me find valuable information on this topic. Thank You.

Date:
01 Nov 2000
Time:
14:39:39

Comments

Hi my name is Matt! I am doing a project for PJAS (Pennsylvania Junior Academy of Science) and I want to do a topic dealing with hydroponics. And I was wondering if anybody had any ideas. If you do please post them on. THANKS!!

Date:
01 Nov 2000
Time:
15:22:22

Comments

Information about hydroponics is all over the web. You can start by looking through this site. If that ain't enough, try the below sites for info & do it yourself units. There are a bunch more, you just have to look!!!!!

INFORMATION: http://www.foothillhydroponics.com/brochure/brochure1.htm

http://www.maximumyield.com/index1.html

http://www.gtghydroponics.com/webfaq.htm

BUILD YOUR OWN:

http://www.hydroponicsonline.com/11plant1.htm

http://www.ns.net/~bennu/

http://www.hydroponics.net/learn/build_ebb_flow.asp

http://www.overgrow.com/iss2/bubbler.html

Date:
02 Nov 2000
Time:
08:11:33

Comments

What is the skinny on tissue culture cloning? I only read a two page article on it but it seems highly superior to stem cloning. Where can I read more on the subject?

Disney World is into it heavily. I took a tour of their lab and filmed video. I will try to find it and post some pictures.
Somebody sells a small tissue culture kit but I can't remember who. 
  I want to try it.

Date:
02 Nov 2000
Time:
12:56:53

Comments

Hey Ron! I am wondering what plant will grow good in this weather using hydroponics.

I am growing tomatoes, peppers, and herbs of all kinds. It is getting kind of cool at night (45 degrees) now. My tomatoes are just showing and if we have an early frost they will be history. I will try to cover them if that happens. 




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