what is this ?

[Poco_Loco]

lol thanks for the information fellas ...see I was totally wrong eh lol...…

some polish guy who lived next door moved an started passin me bits n bobs and that was one of them.... but as he hardly spoke English all I got out of him was "water" it looked like some sort of high tech bong at first so ...glad you've all been able to clear that up for me lol

I might use it actually now yav told me ive never used co2 enrichment before but its an option now if I can get it works properly lol

Don't overfill is the key and you need to be able to monitor it hourly when first added , overflows make a total mess believe me ,
It works but diver co2 tanks with a slow release valve are a better option.