hello, just getting back into fishkeeping. i have always used whisper power filters. however, i recently read that for planted tanks, an internal filter is necessary so as not to disturb water surface. any thoughts? what is the best kind. i only see "fluval" as an option.
i have a 25 gal high, probably near 5 gallons taken up with substrate. the filter will take up more space. i know that it is overstocked: 2 corydorus aenus (albino) spelling??, one pygmeaus, and 4 silver dollar sized angels. i know that i will have to move 2 angels soon enough to another tank. increasing filtration is not an option with plants added to the equation, and one angel is a lacefin so would be stressed to swim. i currently have an amazon sword, hoping i don't kill it.
also want to try CO2 but cannot do the ultimate set up. does the natural fermentation setups using sugar work well? liquid time release? i had more questions and forgot them! oh, anyone try the dip and read test strips for pH, etc?