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trouble with florescents

Posted by julie64 oregon (My Page) on
Thu, May 24, 12 at 1:47

My streptocarpus that I have put under newer
t8 lights look terrible.poor green color with white and brown edges.Stocky thick leaves and no flowers.Identical plants in the window look fine.One bulb is full spectrum and one is a grow light.3 inches from plants and on 15 hours per day. What am I doing wrong. I recently put them on a tray of pumice for humidity. thanks

Follow-Up Postings:

RE: trouble with florescents

Newly purchased tubes output is much stronger then older tubes. Three inches from the tube is too close especially for new tubes. Your plants are actually burning from the light and heat. Same thing happens if you place them out in full sun without shade.

I would back the lights off to between 8 and 12 inches from the plants after removing them from the light completely for a while so they can recover.

RE: trouble with florescents

Julie64, I agree with wec1957. I have written several tips about streps on the forum. If you go to page 2 Re: Streptocarpus, I explain how I grow my streps under T-8's. 3", especially with new bulbs is way too close for plants. That distance would be good for starting seeds but even then I would back off another couple inches.


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