I just set up a 180 gal tank and I'm having a strange issue - I keep getting sand down in my sump. It looks like the upflow slots for the internal overflow are sucking sand up from the bottom and dumping it into the overflow. Some of this sand is making its way into the drain and ending up in the rollermat/sump. I initially thought that maybe I just accidentally spilled some sand in the overflow when adding the sand but I pumped the sand out and its coming back.
I tried to pull the sand away from the slots but that's not helping so far and wouldn't be a long term solution given fish like diamond gobies that move sand wherever they feel like and the sand drifting from the powerhead flow. You can see the flow being generated at these slots and sand flickering around at the openings so that has to be what's causing it. I need to find another alternative to stop this from happening but I'm at a loss.
My other tank barely has any flow through the upflow slots but this one seems to have so much that its able to lift sand up the 2 feet to make it into the overflow.
Anyone have an issue like this before or have any ideas on how to stop the sand from getting sucked up and into the overflow?
I tried to pull the sand away from the slots but that's not helping so far and wouldn't be a long term solution given fish like diamond gobies that move sand wherever they feel like and the sand drifting from the powerhead flow. You can see the flow being generated at these slots and sand flickering around at the openings so that has to be what's causing it. I need to find another alternative to stop this from happening but I'm at a loss.
My other tank barely has any flow through the upflow slots but this one seems to have so much that its able to lift sand up the 2 feet to make it into the overflow.
Anyone have an issue like this before or have any ideas on how to stop the sand from getting sucked up and into the overflow?