I Need Help!

Don't let me kill my babies! They are turning a very light green!

And I can't find the answer. The sprouts seem to be growing fine, but are turning a very light green and spreading fast.

About 3 days ago I switched from CFLs to 400 HPS. The light is air cooled so I have the plants within 5 inches of the light, but it stays about 82 degrees at the most. Humidity is very low. About 40% after a watering and then it drops to about 20% as they dry out. I have an ultrasonic mister in there, but I think all the humidity just gets sucked right out. Light burn? I raised the light to 12".

2.Growing Indoors
3.Watering every 3-4 days with a total soaking with RO water- no nutes at all.
4. 50% Pro-Mix, 25% Miracle Grow Perlite, 10% Lime, 15% Worm Castings.
5. These plants sprouted from seed about one week ago.

Do you Ph your water before watering?

barrgemike said:

Do you Ph your water before watering?

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No, still waiting on my meter. I was hoping/assuming that since it is RO water that I would be ok.

Well Just to be safe let it sit out and air out a full day before watering with it just in case. Other then that it could be shock other then that i have no clue man sorry

looks like overwatering,if youve been giving them tapwater,have you been letting it sit in a open container for 48 hours before watering,i wouldnt worry about the humidity too much,as long as you mist theyll be fine,,as they get older the humidity will increase in ya grow room,,,,,,,,,,,,,,peace

Thanks guys. I will let them dry out until I see some wilt. I hope that is it.

+Rep.

How did this ever work out for you?

They are doing great. They just needed nutes.

Sweeet, looks great man.

Thanks. Your advice about the PH helped.

Picasso345 said:

Thanks. Your advice about the PH helped.

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My RO water can start out with a ph as low as 3 before adding nutes. I take it you got the ph meter, plant looks good. VV

WOW man that plants looks good!

glad you got it sorted out!

Glad to hear that.