| Well...I did build their 150gal rubbermaid setup on my last pond. I used it as the last stage in a 3 part system. I modified it a great deal though...used spring flow under the grating...then poly flo matting to catch fine particles before the waterfall. I made a bottom drain and cleaned it regularly. Replaced the poly flow every month as well. Also had 2 filters before it. So...it was good in my usage. The thought of not cleaning a filter is like having a dog pooping in a pen and never cleaning it!! Some living creature is going to get sick for sure.
I do think scrubber pads are excellent for bio filtration...large surface area..and cheap.
Sooo...what do I think? A good homemade filter if you modify it and clean it regularly. Follow those instructions exactly, and you have yourself a pond with a ticking time bomb.
I still don't get the sand thing....what is that at the bottom?!?! Detritus..or the minerals they state?
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