Hmmm, you seem to have great environmental conditions. The early nute burn could be responsible for the slow growth of the tomato plant, what is the maturity date for the tomato variety?
The blossom drop on the cucumber is caused by lack of calcium. Not necessarily because there is a lack of calcium in the nutes, but uptake problems. Usually the uptake problem is from too high temp in the water/root zone or lack of O2. But from your specs that doesn't seem to be the case.
Maybe try a blooming formula for the cucumbers.
From my experience with tomato plants (but not cucumbers) is that the first few flowers seem to drop regardless of conditions. Might be the case with the cucumbers. Also, sometimes small shocks (like the nute burns) can cause a flowering plant to flower too early, so those early flowers/fruits are not very strong.
|