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Thread: Help with nano sump?
08-20-2013, 01:33 AM #31
Okay, I think I have this working... I had to change up the system for holding the biomedia and trying to get water to flow through that to the pump, because the pump just wouldn't stay in place with the tub (The power cord and the vinyl tubing are both very stiff and hard to wrestle with, so that just wasn't working.) Instead I took a water bottle, cut it in half, put as much of the ceramic media I could fit and still squish it down together to leave enough room for the pump in the mouth of the bottle. I punched a bunch of holes around the bottom with an ice pick. I'm holding the pump into the mouth of the bottle with one of those clear plastic hairbands, and I'm holding a piece of filter fiber over the end of the bottle with another of the hairbands...
I had to remove the pre-filter from the overflow. I just couldn't have anything immediately around it, or it would get bubbles and break the siphon. I just have to hope none of the snails or my fish go into it.
However, because the two water levels are so close in height (in the tank and in the sump), the overflow is silent. And as long as I keep the water level high enough in the sump, the return pump is near-silent too. And there isn't a strong current in the tank either!
08-23-2013, 05:04 AM #32
Edit: If shopping at Walmart is OK with you I've seen batting for around $5/bag in the sewing section.
Didn't buy it though, my local WM often has birds flying around inside and there was bird poop on it...
Last edited by BIO-Linist; 08-23-2013 at 05:09 AM.
08-24-2013, 06:34 AM #33
Sorry about getting these a bit late! My camera vanished on me, but after I found it today and snapped them, I had to leave and do some running around.
Instead of having another pipe come out of the tee, water just flows straight out of it and into the sump. There is a heater and an IAL in the sump, and the only way I could get the mechanical/bio filtration to work was to put the ceramic media in a cut water bottle, and put a bunch of holes in the bottom of the water bottle with an ice pick. Then I wrapped filter floss around the water bottle for mechanical filtration, held on by a clear plastic hairband. There's another one holding the pump onto the water bottle. And then there's vinyl tubing leading up to a ball valve, and then from the ball valve back into the tank.
I think I have a little bit of a slow air leak in the overflow. Every so often I have to suck air out (though so far there hasn't been enough to actually break siphon, thankfully).
08-25-2013, 06:21 AM #34
Good job, thanks for the pics.
08-25-2013, 10:20 PM #35
Thank you! :) Trying to get everything to fit, especially with how stiff the vinyl tubing is, really was a challenge. It's not perfect (I wouldn't trust the overflow if I were going away on vacation, for instance), but I consider it a success for a first attempt!