Tomato Plants are not producing....

[T'Mater]

Well when i mean phase, what i ment was, how do i know when to up the strength of my nutes. That's what i was alway's scared about. Do you just start with week 1 and give them 1/4 nutes XXXPPM and then week 2 goin up to the next level?

For the most part i stay'd waaay low i think for too long if that's possible.

[jamromhem]

My trick so far is to take a step up in the nutes and if they show signs of curl under (some tomatoes curl their leaves under change so you need to be able to tell the difference). If the edges all the way around curl it is too strong. If it is the leave making a curl from tip in (like if you rolled a pencil ender the leaf from the tip) it is a normal stress reaction that some (like brandywine) do. The second has no effect on the plant over all from what I have been able to find on it. The first will kill it :P

Any way. After I up it and look for a reaction, I dilute it back to the previous strength if I get a reaction. If I don't I top off the res with the current new strength. (I run at about 1/2 res when testing so I can dilute back without dumping.)