Originally Posted by Jdinh04
3.25wpg, (65watt, 6,700K)
65w on a 20g?.. overkill, that is alot more than 3.25wpg, more like 5wpg, you have to be deadnut with the C02 and that much light...
WPG rule fly's out the window on small tank's.
If you dose 1/4Tsp KN03, 1/16Tsp KH2P04, 5ml trace, and are having problems?!? it is always light/C02.
Add another needle valve and run a diffuser also, or a wood stone along with the reactor, simply building a pvc pipe and plugging C02 up to that, does not mean you have good C02, no matter what the "chart's" say. The plant's tell the truth!
Personally I would raise the fixture above the tank a few inch's, 8", 10", 12",I hang them from a decorative chain you can get from any hardware store, so the fixture can be adjusted.
Or use less light.
I use a 65w fixture on my 29, and it is to much light for just simply sitting it on the tank for even 8 hour's, thing's need to be adjusted a bit, you are getting close..
It is kind of like playing with a magnifying glass, you know, trying to fry ant's? the glass/ light has to be just right...haha