Are you using the 1100 GPH electric pump with a fully charged battery? Any hose restrictions? Pieces of roots can hang up in the mats, but if classified to 1/8 shouldn't be a problem.

I just want to add how high and how thick the hose is will also effect the flow.

These bilge pumps are not made to push water up, only out, so a foot of height difference will make a visible difference wit the flow. My gold cube is a three stack tray that sits on top of a five gallon bucket and works fine. Also need to stick to the hose size the pump is made for.

To prevent organics and silt from clogging the pump, I use a five gallon bucket to catch the tailings which drains in a 20 gallon cement mixing tub my gold cube its in to catch muck, which drains to a 10 gallon tub, where my pump sits wrapped in a mesh. I've used different things for mesh to a narrow mesh I got at hobby lobby to panty hose.

Also, are you running regular dirt or a black sand concentrate?

I’m running regular dirt. The battery is fully charge. I will Try your set up and get back to you hopefully that fixes it

The pump may not be pushing enough water. Try increasing the amount of water you are using. Also check polarity, reverse slows the feed of water. If that is all good try a different pump

Thank you for all the tips. I should say I found the root cause. Tons of roots in my pump she runs good now