10g DIY Inline Reactor/Filter
I have this idea floating around in my head for the filter/reactor for a 10g, and I can't help but share it with you so that you can help me plan it.
My idea goes as such: two 12" columns of 2" PVC Tubes are set up behind the tank. Water enters the system at the top of one column, which is built like a Rex Grigg style reactor (ie empty), exists at the bottom of that, ascends through the next column which is built like a filter: sponge through the first half, biomedia though the next 1/4 and filter floss though the final 1/4. I figured making so that one screwed off would make it easier to clean, especially if I had a quick release between the reactor and filter. The water then exists from that column and returns to the tank by means of a spraybar. Whole think is powered by a pump/powerhead.
I've been looking at the Maxijet 900. At 247 gph @ 0 head, it might be a bit strong for the tank. The next step down, the 400, is rated at 106 gph and might be too weak, and also cannot be used externally like the 900. I'm not sure how well the 900 will respond to being throttled, so I'm still unsure as to what pump to use.
Crazy, I know. A cheap sunsun would probably be easier, but much less satisfying to make. Has anyone ever made a setup similar to this, or have any observations/recommendations for this type of a setup?