I am in the market for more tunze pumps. I like the performance of the older square type 6105 model due to the ease of placement. I had one, in a 125 gallon before and was impressed. Any ways, I have two that are non controllable in a 150G and would like to buy four of the same type that are wavemaker mode compatable for a 250 gallon tank. I will use a digital aquatic or neptune controller, any advice?