Hi I don't want to upset you at all just want to say, think you have some good and bad bits with your sump. I'm not a fan of the wire holding up your hoses or your socks. You can get nice holders for them that will match your sump and try to get them up as high as you can but still keep them easy to get out. As your fish are not putting much of a load on your filter yet, they will as some of them get bigger. I would put a divider in from the socks to your bio balls and fill it up with noodles or something like that. As for your heaters, if it works it works leave them all in one spot. I would only even them out over that one section so they don't sit on top of each other. Most of what I'm saying is it looks like you got it going and didn't get back to finish it off. I only say this cause you put it on show to see and have high standards on attention to detail.
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First post on MFK? That's interesting.

In any case, welcome...you are going to fit right in.
You are right...I haven't come back to make any changes since I initially set it up. The tank has been a work in progress. Some of your recommendations are aesthetic and would make the sump look nicer. I do like things to look nice so I will take those suggestions into consideration.
Few questions for you:
1. Do you realize that 20 Liters of Pond Matrix has enough surface area to handle the bio-load of 4 full grown (36") koi?
2. Did you see that I am running 20 Liters of Pond Matrix?
3. Do you think my stock will EVER create as much of a burden on a system as 4 full grown koi?
In addition to the Matrix, I have:
- 6 sheets of Matala which add 1,217 sq ft of surface area
- 40 gallons of bio-balls, even if they are submerged, add 860 sq ft of additionial surface area
- 300lbs of gravel (surface area unknown)
Any one of the three types of bio I have in my sump would provide enough surface area for all of my fish. The three combined provide a very solid safety factor.
Let me explain why there can be "too much of a good thing" when it comes to bio:
When you have compartment after compartment of Matrix, bio-spheres, Cermic media, "noodles", etc you are actually just creating places for detritus to settle and essentially turning your bio media into mechanical media. These guys that run extremely excessive amounts of bio media are creating the perfect conditions for a nitrate factory. All that trapped waste sitting within the bio-media is hurting your water quality, not helping it. This is actually the reason that most salt water/Reef guys are moving away from using wet/dry for bio. If you don't believe me, do a little research and find out for yourself.
Please post pictures of your sump and your stock as an example of what I should aim for if you still feel my filter will at any point be insufficient.
I'm starting to realize why some of the people with larger setups on here don't share or post pix...
It's so that they don't have to deal with the
