Question: 

I bought a Wasdale and a Windermere.

I am wondering how to get the water coming out the Wasdale from my pump without the hose showing.

Can I use a bulkhead fitting or any other suggestions? 

Answer from Owner of Politron: 

There is a grove on the top edge of the wasdale that can accommodate a hose placed over the back edge & generally there are stones placed around the cascade. The stones generally cover the hose and the edges of the cascade. However, a bulkhead fitting could also be used it would require drilling a hole to accommodate the fitting. The hose is usually run under the edge of the cascade to protect & hide it. I like to layer the stones like the customer has them but one more layer covering the top of the cascade edges so the only black visible is the reservoirs.