hob filter

on my 55g i have a hob filter with several monstera and pothos vines growing out of it to help balance the water chemistry since its ratger heavily stocked. i looked in there and there was quite the biofilm building in the filter. im pretty positive its from putting pellets in the outflow of the...

So I have two emperor 400 filters running in my 75 gallon tank. The most recent of the two filters has suddenly acquired a massive problem. I was going to to turn the filters back on, as I do weekly for my water changes. Filters purged back up all the way of course before turning back on. The...

I haven't changed the carbon in my HOB filters in a very long time. I usually just rinse them out every once in a while to just clean the waste out. The carbon is probably doing nothing because its probably inactive by now. My fish are doing just fine and looking and feeling great so I was...

The water level in the filter is literally a hair to the top of spilling onto the overflow groove segment even after cleaning out every compartment. This means at the slightest buildup, the filter won't work 100% as it spills into the groove. Does anyone else find this annoying?

This is probably a noob question but does the intake tube have a mesh at the opening or is just the tube? Because if it were a very large tank with a very powerful suction, could that not possibly hurt a fish accidentally swimming against the tube? 2nd question: would a 70 hob filter, and a...