Hi all, I have a 33.8 gallon tank equipped with 2x 24W T5HO. Going to place deflectors on these tubes this weekend (hood is not equipped with anything (except for being white). But am wondering if a CO2 kit would be usefull or not? I now have a kit that works with tablets and drop one in every 2 days (indicated in manual). Also added a long term CO2 test in my tank (from Dennerle) a week ago. The result it shows usually is around dark green/bluisch tint that would mean 20 or 10 mg/l CO2. Since i have a lfs store to refil CO2 cannisters near my door (5min.) I am wondering to upgrade it to a refillable CO2 kit. But have no clue if it is worth the money to invest with this kind of light? Just added dwarf baby tears and would like to be able to let them grow properly. so was looking at a Dennerle 300 space (refilable). any advice would be welkom.