Organic Substrate vs. CO2: Another Debacle?
I'm looking to add a partial (50/50) gravel/organic substrate(Miracle grow potting mix?). No fish but possibly some worms, snails, crustaceans?
Is it possible to have a healthy 5 and 10 gallon planted without CO2 but with an organic substrate? Tank will have HOB and heater.
What will I encounter vs going with CO2 only route?