I have a Ph tester/adjuster kit, the only problem is that with 8 gallons of solution it is hard to mix in the acid quickly. What I do is I increase the flood and drain times to 30 minutes instead of 15 for flooding for one day, then reset them. Sometimes this still doesn't mix it well enough. I use Formula X from gtghydroponics.com What I'm really asking is what causes these problems? Are they Ph or EC relevant? While I know they both need to be regulated, are they the at-hand problem?

Hi - I am no expert (I am having my own problems as well) but is there a chance that it could be sunburn? If there was a string of sunny days before the edges started turning brown, and the plants were indoors previously, I think that could be a possibility. Good luck and green growth to your leaves!

Even though it could be fertilizer burn it seems to have come most directly after the neem application so thats my intuition.The thing recommends 4 cups for 100 sq ft I think and my garden is about 75 sq ft and they are in the ground. Could be too much because I didn't apply it evenly around the whole 75 feet only around the plants in rings. I also maybe added an extra cup because I ran out of the fert compost mix and needed to make more. But, I dont know how quickly the fertilizer would get to the roots anyways? Thanks for the help :) so you think they will bounce back? Any good organic fertilizer ideas for liquids? Am I fertilizing enough? Just as a few side questions if u don't mind :)

The containers will probably improve with more steady feeding. Rain and watering leach fertilizer faster from a container than the soil. The one in ground will eventually get nutrients from the mulch as it decomposes but depending on conditions could probably use some extra fertilizer at times to grow well. If the leaves start having problems again take some more pictures. You should also learn about pruning, trees that are weedy and dense are more vulnerable to fungi that attack leaves.