I have a question about fluidized sand filters. Basically are they any good. I made one, ill link the video of it working, well of the site gauge, ill post more pictures tomorrow. I left it at my friends house when I was showing him how it worked. I honestly made it to just make it but I read to many conflicting opinions to risk hooking it to my tank. I'm not against it just can't seem to find any articles that unbiasedly (not selling them) gave a good reason for or against them.