hard to say. I used to even use aquaclears with c02 injection and never really noticed a drop in plant growth, but then again, the water level was always kept topped up too.
that makes a big difference: as your level drops you expose the outflow to more air, allowing for more 'gassing off"
that makes a big difference: as your level drops you expose the outflow to more air, allowing for more 'gassing off"
