I have cauliflower seedlings under T5 lights and they are yellowing. My tomatoes and peppers are fine. The lights were about 2 1/2 inches from the seedlings, could I be scorching them? I moved the lights up to about 4 inches but it's too soon to see if that helped. I had some seedlings dampen off last year and have tried to let them dry out more this year before watering, could I have let them dry out too much? When I do water I put about a cm in the tray and after 15 minutes dump any excess, which is what a local advised me to do. I used to do more frequent but she said less frequent big waterings was better. Could I be overwhelming the seedlings with too much water at once? They are in a soiless starter mix and I haven't given them any fertilizer yet.

It's my first time trying to grow cauliflower, and using the T5 lights. What height does everyone else keep them at?

Thanks in advance!

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