These circulation pumps are driving me nuts kicking the sand everywhere I have them pointed straight at the glass if they are aimed any higher it will start draining the tank on to the floor. Any ideas to fix this issue
Sent from my space ship
Seeing you have MP40's I would turn off the circulation pumps. I talked about doing it a couple times in my thread. Just did not see the need for them and felt they interfered with the currents/flow the MP40's were trying to create. Can't tell for sure by looking at your pictures but it looks like you have some pretty fine sand like mine. The sand "thickens" up over time and is not so easy to fly away at the slightest wave like when it was new. At first I had to run my MP40's at very low speeds to keep from moving around too much sand, but since the sand has matured/thickened up over the last couple months I have been able to increase the power on the pumps without creating a sand storm and it's working very well now.
Play around with turning off the circulation pumps and see what you think. They are necessary if you do not add non stock equipment like a pair of MP40's, but I don't find them necessary at all and actually create problems with excess heat and too much flow blowing in one direction constantly if you have other pumps added to the tank. On a 600 you essentially have 7 pumps blowing into your tank. 4 circulation pumps, 1 main return pump and 2 MP40's. It's a wonder your rocks don't get blown over.
Experiment a bit and see what you think. I'm using the stock circulation pumps as spares to the pumps I use to pump water during water changes and to mix salt in my mixing barrell as well as pumping water from my clean water barrel into my auto topoff refill jug. They have come in handy and my tank does not miss them and I believe does better without them.