I posted this on another forum without much response.... wondered if anyone here could help me out... it was 2 posts.
I found a site that had a calculator where you plug in PH, KH, and it spits out your c02 ppm... anyone know how accurate this method is?
I had a PH of 7, and KH of 4, so my c02 was 15ppm... Ofcourse, 15ppm doesn't mean a WHOLE lot to me.. I know it's not very high... people were saying crank it up to 50ppm to stave off algae... Can anyone tell me if that is going to help my plants much? I setup a DIY c02 deal and have the bubbles going through my powerhead for diffusion. Seems like it is working ok, but I may need to lower my powerhead as there is a lot of surface agitation and I know I'm losing c02 because of that. Also, I know that the bubbles aren't having a huge chance to disolve, even though they are chopped into reallly fine bubbles by the powerhead. I'm getting more than 1 bubble per second. I don't have any clue what kind of rate that is... good/bad...
Ok, so in addition to my 65 planted tank, I have a 18 gal. rubbermaid tub that I have made a holding/growout tank out of... Basically I threw some substrate in it, and I planted a bunch of REALLY tiny pieces of plant that I had left over... as well as some of the crappier looking plants. I have been dosing it with excel and the flourish comprehensive... I have a 18w plant light on it that I borrowed to start a 2.5 gal. with ... well since I don't have a 2.5 gal yet, I was putting it to work on this thing. I also have a 24" double t12 florescent light on it.. the bulbs say UV on them, so I thought they may be good for plants. No aeration. No filtration. Nothing but plants, substrate, and snails. Snails were born in tank I guess... The plants in there are doing 100% better than the plants in my tank. I am mystified. Not a trace of algae. Plants are growing well. Pisses me off... hehe..
SO... now that I am doing the DIY c02, I have been sticking it in this thing at night. I leave the lights off in the day while the c02 is in the main tank, then turn them on at night and leave them on all night while the main tank is asleep. I just tested the water this morning... and te PH was between 6 and 6.5. I just stuck the c02 tube in there and put some filter fiber overtop.. no diffusion besides that... and the bubbles were rising to the top and popping at the surface.. As I said, PH was about 6.2... and KH was 3. Putting those measurements into the calculator from my link in the above post gets me nearly SIXTY EIGHT ppm of c02. Can that be right?! Is this why those plants are doing much better? Can you actually get THAT MUCH c02 with zero diffusion from DIY? It seems really weird to me. IS that calculator WRONG?
Hopefully someone will have some sort of answer.
HOw does everyone else measure the amount of c02?