The Apogee model the club has runs about $350... Reliable/accurate are funny things. Nick from BuildMyLED said at the AGA that you need to spend $1000+ for accurate PAR meters. When pressed, the Apogee is +/- 5-10 PAR in most cases. There are folks online who have converted cheaper lux meters to ge...

Cristy Keister wrote:The club has one to borrow.

I was curious about price anyway.

Well, it depends. There's a lot of room for customization. For example, you can add more and under drive them, prolonging the life, reducing heat, and getting a more even spread of light, or adding in different color LEDs to adjust the color cast. Also, lenses make a tremendous difference of PAR in...

Is anyone aware of an inexpensive yet reliable PAR meter? I'm using LEDs so I don't even have much of a WPG rule starting point as bad as that rule goes. My tank is (L)42" X (W)24" X (H)22" and I have 36 3W Crees with an additional 7 3W Crees in the middle of the day. RapidLED, where ...

Also search"beamswork led" at Amazon. I own a few on low light tanks and they seem great bang for the buck.

Thanks Kris... How did you know I has a GSA problem too

I'm thinking K2S04 (Potassium Sulfate)

Plants are mostly doing OK, not good, just OK, in my new planted tank except the Pinatifida. I've read a few places that adding potassium is sometimes a fix to the problem. My question is what form is best; K2S04 (Potassium Sulfate), KN03 (Potassium Nitrate), or KH2P04 (Mono Potassium Phosphate). He...

OK, thanks Ghazanfar

I was reading Ghazanfar's article on ferts and was concerned if I may be forming insoluble Calcium Sulfate by mixing KH2PO4 (Potassium Phosphate) in my Macro Mix which also contains Ca(NO3)2 (Calcium Nitrate), Mg(NO3)2 (Magnesium Nitrate), and KNO3 (Potassium Nitrate). My tank has a sump with a turb...