When to move rockwool seedlings to dutch buckets

[gdgdad]

Stan, the new “tank” is in the ground (see pics). Whew what a job! Forgive the temporary electrical arrangement, but it started raining and I had to scramble. I’m assuming (hoping) filling it near to the top is the 55 gallons. I’m going to look for some type of flow gauge for the end of the hose. I mixed nutrients (¾ strength) for 55 gallons, and 1 gram Epsom salt per gallon. I’m down to ¾ a gallon of each concentrate mix – looks like another drive to Vertigro® soon… Also, it took ¼ quart of PH UP to get the PH to 6.2 . Post "fill and PH adjust", water temp was 74, I’m debating adding a frozen gallon – your thoughts? It’s a whole new ball game working with this volume! I’ve covered the tank’s top in foil insulation, and the heater’s in there “just in case” (we will briefly see 30’s this time next week they’re saying!!!) I’m praying my heater in the sealed “greenhouse” can keep it at 60f or above. I’m pretty confident – the visqueen is a really heavy mill, and on a high 40’s morning it was 90 inside. My remote thermometer arrived and I can monitor the temp inside without opening the visqueen. On the tomatoes… one has a “powdery” black spot (sort of "smuggy"), and two others have what looks like “indention's” on the bottom (see pics). These are the only tomatoes I see with any anomalies – the rest look shiny and clear. Hopefully this is something I’ve spotted in time. Your thoughts / suggestions? Remove these tomatoes? I still have the Neem® oil. Thanks again for all your help! GDG