Thanks Paul for the tip! I'm sitting here trying to visualize the tap setup you mentioned on the hoses. I'm assuming most probably wrongly that you put them on both the intake and exhaust hoses? I'm not sure if the 203 that I have on the 25 gal qt/hosp tank would be of sufficient size for me to move over to my 55 gal that is housing my sunshines, I don't think given the fact there are 6 sunshines in it that get fed 4 times a day as do my other 3 tanks the 203 would be able to get the job I want done properly even with the Penguin 350 biowheel and the sponge filter in operation. The 25 is completely empty of fish now. The only one I had in it was my BN that my son bought me as a belated bd present and it was moved over to the 29 that houses my WD's. The bn went thru a 4 week qt and about a week after I moved it I found it dead while doing a wc laying behind the sponge filter. I am looking very hard at eheims as well as the renas. Hard for me to make up my mind totally as I have a deal or two in the works on canisters. Like everyone else it all hinges on financial statuse at any given time. Take care Paul and thanks for the reply and the input...it's deeply appreciated.
George