I was re-reading Chuck Gadd's "Measuring CO2 levels in a Planted Tank," and ran across this statement:
If your water contains high levels of phosphates, it will alter your water properties, and invalidate these CO2 calculations.
How true is this? I'm assuming this would also apply to the phosphates we add and just how high is "high?" I've been trying to keep mine at >2ppm which has done wonders in limiting Green Spot Algae, but do I not have anywhere near the levels of CO2 I thought
I had? I'm keeping the KH buffered to around 3-3.5 (54-63 ppm) with a fairly consistent PH of 6.4 or so (best I can tell, I'm beginning to think I'm color blind
. ) According to the chart that would indicate CO2 levels in the 35-40 range. I still get "fuzz" algae and/or hair algae (I think.) I did the Excel thing which almost eradicated it, but I'd rather not do it again. The fish were not
happy campers although the shrimp acted like they could care less. I'm suspecting that I may not have the CO2 I think
I have. I have my spraybar pointed slightly toward the surface to produce a barely noticeble surface ripple across 1/3 of the tank. But I would not think that would outgas a huge amount of CO2. I'm not using my controller at the moment (need a new probe as related elsewhere) and am trying the seat of the pants method that seems to work for other people. Perhaps 2bps and on 24/7.
Or am I way off base here?