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post #1843 of (permalink) Old 03-26-2013, 02:31 PM
Planted Tank Enthusiast
Join Date: Dec 2010
Location: London
Posts: 594
Originally Posted by Matt1977 View Post
HI Mate,

Check out my Journal on my Edge build. I changed the filter into a canister filter and was concerned about O2 levels in the water as well. So I used the HOB as a water cascading unit : Cube Nano to 46 Litre Fluval Edge
I mounted canister filter hose intakes and returns to the bottom of the hang-on-back, effectively piggybacking onto it. However, I have quite a large canister filter, (Fluval 305), and I'm concerned that the low oxygen levels have been detrimental to my system. I've had unexplained losses which may be as a result of pathogens benefitting from low O2. I believe it has increased my water temperature as well, (unless that is due instead to my light mods), and it's usually around 80-85 degrees which doesn't help O2 levels either. I upgraded to a 500 series larger impeller for the hang-on-back filter, which seems a little noiser but doesn't seem to have made a huge difference in the current, (too many plants in the way perhaps).
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