That is true. The reason I decided to make mine was as I couldn't find anywhere local that sold it. There is online, but then I have to pay P & P and the price goes up. And I had a Saturday afternoon to fill, a kitchen to flood and a B & Q to visit.
Plus, I think the £25 Python has a 25m hose? For my £25 I had 50m - which admittadly is more than most people would need, but I am sure there is some use for a lot of left over hose......
Took a trip to b&q today to give this a go. Been meaning to for a while. Didn't need mine to suck because my syphon could drain into my shower base. I still used a y piece so i could mix hot and cold water back to my tank. Very pleased with the results glad i took a look at this thread now. On another good note while my tank was filling back up i got to watch one of my africans spit its fry never seen it before. Was great watching all the fry swim in the currant, then realise there were bigger fish in the tank and dart for the cover of the rocks.
Just put it in at the same time as the water is going in. Obvious try to avoid squirting it directly into a fish's face, but putting it in just as they water is about to go in will do the trick
Is it possible that when emptying the tank if you attached another section of hose to the y section, rather than pouring the water down the sink you could water the garden?