hi i want to know if i can do this for my next plante tank a low tech crypt tank.
tank is 3 feet x 12 x 12
http://www.ntlabs.co.uk/product_details.php?product_id=141 i was gonna buy 2 or 3 tubs of the 2.8kg one
and this to go on top http://www.aquaessentials.co.uk/index.php?...roducts_id=1208...