hi guys ive just moved house and transferred me fish over, i have a 120 ltr tank and i cleaned the filters 2days before i moved and gradually broke the tank down over the week ready for the move so the day i moved there was just the sand filters & heater in, also fish untill they were put in storage tubbs while we moved the tank anyway i kept half the water out the tank and took it with me, i re-set the tank up within the hour from moving it put 3 or 4 fresh buckets of water in and all was fine set up again lovley but it wasnt till a couple days later i did a water test and my ammonia quite high ive been doing daily water changes 10% and the odd days 20% but it doesnt seem to be lowering the fish are ok i think so what im thinking is the tank going through new tank symdrone and starting a new cycle in the tank ive also heard that to many big water changes can be harmfull to the fish is this true . so any advice would be grate cheers craig