| I think we are diverting quite far from the intent of this thread: To share and exchange knowledge with the group about my pond project. I rather not spend too much time talking the merits of concrete construction. My plan is to use the existing structure and spray Polyurea. As for the structure, we will use concrete backer boards nailed into the structure to provide a smooth and strong surface -- End of story!
Koiczar, thanks for the suggestions about the bottom drain. I did consider Koi Toilet II aerated bottom drain. The price difference between the Koi Toilet II aerated bottom drain and the Rhino II was pretty small -- I would say around $40-$50. Also, the Air Dome can be screwed on and off with the Rhino version that I got. No need to glue the air dome to the drain. I saw both units, and personally liked the construction of the Rhino II. I was built using schedule 80 PVC, and looked solid from what I could tell.
Going back to the filtration question, I am glad you brought up the idea of capturing solids in the Vortex. This is a question that has been bothering me for some time. I have the settlement chamber drilled with a 4" bulkhead and a stand up 4" pipe in the chamber. However, given the flow rate, I would think that all solid, except the really big stuff would flow through the first tank to the second.
I had thought about ordering a Vortex Micro Strainer for the Wave 36 filter from William Lim. He claims that this will stop all solids from moving to the second chamber. However, it is quite expensive for a simple screen.
I really do like your idea of using the Blue Matala 37" round filter in the first chamber to capture solids. It is a much more cost effective solution that the screen.
However, my main question is which method does the group think would work better in a 2 Vortex setup in capturing solids? The Mat or the Micro Strainer? |