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Edward · 06-28-2004, 06:34 AM

Three issues ...

1. Light intensity decreases with distance significantly. Your distance of 9.5" is causing a huge loss of light, at least a half. Not now, but once you get the little algae under control, lowering the hood will help greatly.

2. Too much Fe/TE

3. Your GH is 20, that's a lot of Ca. What is your Magnesium? I can predict none or too low to balance the Ca level. This is why your plants don't grow fast enough.

I would discontinue dosing Fe/TE until deficiency symptoms appear and start dosing the same ppm amount of Magnesium as NO3. In your case 10 ppm.

Edward

06-28-2004, 06:34 AM	#2 (permalink)
Edward Moderator Join Date: May 2004 Location: at home Posts: 2,019 iTrader Ratings: 0 Plant Points: 103005	Three issues ... 1. Light intensity decreases with distance significantly. Your distance of 9.5" is causing a huge loss of light, at least a half. Not now, but once you get the little algae under control, lowering the hood will help greatly. 2. Too much Fe/TE 3. Your GH is 20, that's a lot of Ca. What is your Magnesium? I can predict none or too low to balance the Ca level. This is why your plants don't grow fast enough. I would discontinue dosing Fe/TE until deficiency symptoms appear and start dosing the same ppm amount of Magnesium as NO3. In your case 10 ppm. Edward