Planted Tank VIP
Join Date: Jul 2002
Location: Winston-Salem, NC
Are you just letting the air bubbles get sucked into the intake? Or is the Fluval pushing a reactor? If you inject gas into a top-mounted impeller canister filter (like the Fluval), the gases can collect in the magnet chamber, causing it to run "dry" and overheat.
In spite of the danger of damaging your filter, I'm surprised you're able to diffuse the CO2 at all through your Fluval. As long as you don't see CO2 come out the other end of a CO2 reactor, you know it is dissolving into the water (or collecting in a chamber, to dissolve later). With a low KH like 1.5dKH, I would worry that the pH would drop TOO quickly.
How long have you been running CO2 into the tank?
- Sam P -
plantedtanker in limbo - all tanks currently in storage