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Add co2 or not?

783 Views 11 Replies 5 Participants Last post by  burr740
So I currently have a 75 gal tank do weekly 15 to 20% tap water change. My tap has about .5 ammonia and about 5 to 10 nitrates. A few weeks ago I had bba and uesd excel to get rid of it and it worked great. I also got some great growth from my plants and some plants that were thought to be gone started to poke out of the substrate again so it helped with growth but I know in the long run will cost to much. Now I don't dose any ferts but could if I needed too but would hope that I don't have to preferably. I have some dry ferts. Now if I was to start adding co2 maybe about 1 bubble every 4 or 5 seconds which is still better than no co2 at all Would i have to start dosing or would the weekly water changes keep it going good. Also the lighting is one t8 32 watt daylight bulb. About 5 inches off the top of tank running 8 hours strait. Thanks to all in advance for any input.

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If I understand you, you want to have a tank with CO2 injection, but not necessarily go high light and frequent dosing. The plants will certainly benefit even from low CO2 enrichment. Where people run into problems is when your light is too high and CO2 too low -- algae, or when CO2 is ok to support fast plant growth but one nutrient is limiting --- nutrient deficiency. It sound like your aquarium does not have too much light, and if you see nutrient deficiency you could dose something or reduce CO2 as you like.

I did the same thing you describe with one of my larger tanks when leaving home for long periods--- lower light, lower co2, no extra ferts added, just the random person to feed the fish. Lost some very demanding plants but overall quite satisfied with the results and the lack of algae.

What are your cost-related concerns ? CO2, macros, micro or light ?
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