Thanks for that, did my first water change today, went like a dream one very large plastic bucket placed in shower and filled up last night with a aquarium heater running in it, temp was same as the aquarium today small pond hose attached to good bit of hose from the aquarium, then transfered water from the bucket to fill up the tank, no mess whatsoever, API water treatment added and good to go, would like to have say 6 small Tetras, but have to be patient, will wait till I see if plants start to grow then do a water test, onward and upwards, will do a water change once a week even if there is no fish, hope this is the right thing to do.