Is it possible for a high fish load to produce enough CO2 for moderate lighting say 2.5 to 3 Wpg? And the plants in turn produce enough O2 for the fish?
About as possible for snow balls in Hades.
I plan to stay low tech so if it wont work no big deal. Also is it safe to do a "Noon Burst" say run 2WPG all the time and for a couple hours a day run 4 WPG?
Algae, poor plant growth etc........try it and find out
Also what happens if you run High Light without CO2?
See answer above.
Use less light, that's the common sense method.
No way around it.
Well, use all floating plants etc(blocks all the light).......but not submersed......
The tank has a fairly high fish load (at the moment, until some of my molly's are big enough to sell) i would guess (and its only a guess) 60 to 80 fish in a 55g, mostly very small fry, under 1/2 inch.
If i could afford a Pressurized CO2 unit i would get it in a heart beat, but right now its just not in the budget.
Do not use high fish loads and non CO2 methods, that's the trade off, balanced fish loads, no water changes, stability is the key and balance.
No water changes= more stable CO2 levels along with low light=> which means less CO2 demand from the plants, more light=> more CO2 demand.
Plants will adapt well over time to low stable CO2, or high CO2 etc.
Adding high light without CO2 is a recipe for algae and disaster.
Fish add virtually none for the plants.
I'm curious as I've heard this 1001 times before, how can you afford high light, but not CO2? I can finaggle a CO2 system for under 100$, but 3-4 W/gal of light for a 55 gal or higher?
Place the $ on CO2 gas, and add more light once you are ready or really understand that goal and what the work entails.
More light is not better, it's just more work, pruning, dosing, less room for error.
Which few folks really want in their a method, and it does apply universally to all methods
, more to non CO2 than most any other.
Why add more work for yourself?
Pick a goal and stick with it and understand the trade offs.
You do not get to chose a particular method and then misapply it without paying a price. No way around it.
Wait for CO2 gas, or go non CO2.
Either way, patience is all you have for now.
Might try Excel for now.