"Gill Passman" wrote in message
...



That sounds ambitious....the water change water butt thing sounds good -
certainly better than carrying buckets outside to throw them on the
plants...

I presume yours is about the same as mine around 600 litres? 20% water
change every week ten days or so that's a lot of buckets to be carrying. I
have a hose that sits in the garden that I use to syphon it off with at the
mo, but it's minus a lot outside at the moment and weekend I don't want to
leave the doors open to syphon the tank.

I've not come across undergravel heating over here...what's that all
about?

Theory is plants grow markedly better when the roots are heated, also it
creates a water convection within the gravel itself, which helps breakdown
the crud build up. Now how true this is I'm not 100% sure, but it's a gadget
so what the hell. The other thing is the gravel acts like underfloor
heating, it takes a while to build up to temperature, but then your heaters
in the tank are hardly used at all.