| Well, Yep John, you want the filters to be upflow. This helps to keep settled waste at the bottom where it can be sucked out when you pull a valve. Do you understand the valve thing?
The latest and greatest mechanical filter is the Easy, probably patented, developed from some practices Maurice Cox developed, but pretty easy to knock off. After you have built your own you can call it the Sleasy or EZY or fake Easy or whatever you want, be creative. And best? No matts or brushes.
Kaldnes media named K1 floats. When it is contained in a basket so that it gathers around an exit pipe from the filter chamber, the water flow is fractured and quiet eddies are created in which crap can settle within the media. To clean it, water flow is stopped, air is bubbled through it for agitation, and then the chamber is drained of water, the crap along with it.
Follow this with an aerated chamber of K1 for bio and you're cooking. A bit more DIY and the pump could send your flow to a shower filter. This system will allow you to feed and grow your fish, though 225g is probably still not enough water for more fish than you have now.
For design hints you only need to search this and just about every forum.
HINT- K1 gets EVERYWHERE if you let it.
Next Hint- Figure out what to do with the humidity before your wife grabs the varmint gun.
Third hint- 2" is the minimum pipe size. Don't use any 1 1/2" except maybe from the pump to the top of the shower.
Hint #4- These specific hints may not be best for you.
Mickey the windowman |