Can I use this diffusion method with a whisper power filter? If so, would I put the CO2 tubing in the bottom of the tube of the filter that sticks down into the tank?
I tried a Hagen Mini Elite filter for a diffusor, but the one I got (it was hard to find, seems they're being phased out or changed) was slightly different from the one everybody seems to use as a diffusor. There was occasionally a large bubble, and no small bubbles. After a couple of months, it started making an awful noise and I removed it. Now I have an airstone, but it also occasionally gives off a big bubble instead of many small bubbles. My drop checker is blue. My plants just aren't doing that well!
-30 gallon planted tank, set up for 6 months
-raised T-5 Fixture, 1x39W 10K/460NM, 7 hours a day
-whisper power filter with ceramic rings in one side and nothing in the other side
-DIY CO2, diffused with airstone; drop checker is blue
5 harlequin rasboras
3 white clouds
2 black phantom tetras
Java ferns, anubias, crypts, anacharis, banana plant, small sword plant, 4-leaf clover, dwarf sag, bolbitus fern
ph 6.2, nitrites and ammonia 0, have been using EI dosing for 3 weeks