thats a really good Idea Virgil, does it impair their ability to heat the water around them in any way? or does it just continue as usual. yeah when choosing my fish I decided to just choose fish that I like. ones that I found interesting and unusual and fell into the "semi aggressive" category.
i have not noticed any problem with the 2 i rigged that way.you could drill holes in it if you thought the water flow from top and bottom was not enough