Thanks Planted. Although there's a handle in the middle that would limit a small percentage of the media height to 1.75" most of the basket would allow for media up to 2.25", although it would be stacked right up to the bottom of the next basket up. Not sure what you mean by overlap though. Do you mean sit directly on top of each other? The way mine stack it doesn't look like the top basket would protrude into the basket below it almost at all. The top and bottom 1/8" of each basket are chamfered a bit to accept the other, so an 1/8 is lost there, but the top basket's ceiling is recessed up into it just about that much so none of it's volume would be lost really.
And how did I get no media? Good question. I'd have to look up who I bought them through. A check at Dr. Smith's site shows that apparently they don't ship media with their Eheim 2076 or 2078s, which is what mine is. Guess that's it.
So here's the next evolution of all these ideas of mine...
Just saw an evaluation of the MarinePure filter media on their website by some guys maintaining a very large aquarium at the Aquarium of Niagara I think it was. Anyhow, he described how he used MarinePure blocks in one of the sump filter systems and he mentioned that it's important to let the water flow passively around the filter blocks (as opposed to forcing it through) so anaerobic bacteria can set up shop in the interior of the block (which I believe helps to eventually get rid of nitrates? after they establish after a couple months). So....
Best idea now since I'm going to use two baskets with this stuff (and b/c I'm lazy and would like to do as few water changes as possible) is to fill one basket with just the 1.5" MarinePure filter balls (utilizing passive flow) and the second basket I'll get a block of the MarinePure filter material (which at first look seem to be maybe 2" in height) cut them to fit the basket exactly and then possibly permanently install them into the basket using aquarium safe silicone. The fit would be as exact to the sides of the basket as possible and the silicone would be spread from top to bottom all around the edges of each basket forcing water flow through the entire media. This setup would provide for both lots of forced pass through the filter media as well as passive flow around the 1.5" balls allowing a place for the anaerobic bacteria to set up shop.
Whats everybody think bout that?
Overkill yes I know, but if spending more now on lots of good filter material (read more nitrifying bacteria) will provide for less water changes down the line then I'm all for it.
Last edited by bradleyheathhays; 06-04-2014 at 06:12 AM.