Originally Posted by fishwonder
You sure that's a Mainland 225? I can't find that model number. Anywho, need to ditch those expensive cartridges and use your own media. To clear it up faster, might want to try just simple ploy fill in the Marineland filter. Once that poly fill is cleaner, remove it and fill the empty space with 10/20 ppi foam blocks. No cleaning for months now and clear water.
Hello, what @fishwonder is suggesting is that you can stop spending a bunch of money on cartridges, just buy a few things that cost less & last a lot longer to filter your tank just as good or better.
This is what I do. I empty filter chamber of cartridge, bio grid. Then I place a course sponge next to impeller box so water flows through it to catch muck(2 sponge for 5$ petco). Next to sponge I place 2 or 3 plastic pot scrubbers to hold beneficial bacteria(4pak for 1$). If you feel you need to filter water more you can use lrg bag of poly-fil quilt batting. Simply cut to sz & place between sponge & scrubbies(12$ Walmart). It's a big sheet that's 7.5ft wide & 9ft long it's just like the floss that covers stock cartridges.
In first pic you can see how I have mine setup, In second these are what I purchase & third is batting for added filtration.
I would squeeze scrubbies next to cartridge you are running now for a few wks so you don't lose you cycle. Hope this helps!!!!!