The rapids tank was done next. I had a grand plan for a stepped layout with "white water". but realised this setup would not suit that as the requirements were too high and specialized. For now. I ended up going with a more sloping gradient that I am happy with at the moment.
The stiphies were added to the this tank and I am looking to add hillstream loaches later.
Here are some closer shots of the riffle tank:
This is the inlet. It has since had a gauze covering put on to prevent the panda loaches for swimming upstream and into another tank.
The inlet was also angled down with a 45° PVC elbow as the flow was going across the surface to the outlet without really affecting the stream bed.
This algal growth did wonders for the panda loaches and to date I barely feed them. They constantly have fat bellies and are growing well as there is so much biofilm growth with critters living in the grass like algae that they feed all day long without depleting it. For the time being.

Two to three times a week I drop a veg or carnivore pellet in and observe them all together. These three are growing so well and I am enjoying watching the color change.

The start of the rapids tank.
Once the tank was setup and testing was going on. I must get an updated pic of the rack as the lights have been attached above each tank and give a much better lighting effect.
The large rock on the left at the outlet was to help create some surface agitation to give the effect of water over rocks and the shimmering effect from the LED lights.
A shot from the right side of the tank looking "upstream"
I tried to create a patchwork of flattish rocks sloping down. The gaps between stones I filled as naturally as I could to make the stream bed as flat and bedrock like as I could while leaving gaps for the fish to hideout in and feel at home.
The largest, I am assuming female, loves this hideout. She occasionally enters one of the subterranean caves I made and praire dogs.
The stiphies were a blast watching them argue creating a new pecking order. I thought they would love the strong current area on the left but the all hangout in the lowlands of the tank.
