Update!
both heaters broke and gave me an eletric shock and now pipework is leaking great!!
But guy who built tank and holding turtle and fish for me coming tommorow and installing a massive pond heater cloverleaf 1kw and fixing pipework so should have katie back very soon, got massive sump on it with 50kg of alfagrog and got loads of bacteria balls.Aswell as this got about 15kg of alfagrog cycling in other tanks and sponge filters which are very seeded over 8 months old.Hopefully katie will be back as the best chritmas present one could ask for!