lack of oxygen in tank??
I am getting back into planted tanks and am having quite a rough ride.
I have a few crypts, a sword and java fern in a 20H. I am using flourish excel, iron and potassium. the filter is a Fluval 404.
after 4 or 5 days, my fish are all gasping for air at the surface. plugging in a spare air pump cures the issue, but I have never had a need for an added air pump....
there is little surface agitation because of the output for the Fluval, which is still relatively new. It replaced a Rena XP that finally took a dump; the XP had a spray-bar across the back of the tank. is this something I should be using in the new setup?
any advice/ideas/help/suggestions are appreciated. thanks!
i have three main interests: home audio systems, aquariums, and cars ...the first two get all my money