hi. can somebody help me. a little bit alarmed. seedlings are two weeks old and for the last 5 days they've had yellow tips on the second set of leaves meaning first serrated leaves. i have them under 2 - 30 watt flourescent twin tubes. i soaked my rockwool cubes at ph 5.5. been feeding them ph5.5 water spray until yesterday. I gave them 1/4 strength formulex to see if it would bring the colour back or perk them but no change. what is my problem? it seems like they've stopped growing in the last 4 days. my humidity is 60 and temperature 75degrees. i have a circulating fan blowing gently on them. my light is 3 inches away from tops (in my closet). Is my problem light? Should i transfer them to XL budbox with 600 watt light 4 feet from tops? When should i give them formulex again? Any suggestions or help on the yellow tips would be well appreciated. peace out.
