This is most likely my last option. I have moved the noodles into the lower part of the sump, as suggested by Fresh2o. Now my last option is to move some filter media from an existing planted tank - that has been running for over 5 years - my home tank. What do people think in taking filter pads - full of good bacteria, and successful tank, as it is my own, and transferring it - into my - sump tank - to help it along, and get the "bacterial" bloom sorted - should this be the issue? - Has anyone got any - objections to transfer of filter media from one tank to another?