plumbing drain line

There's two valves I'd like to plumb horizontally. Can I achieve full syphon with a gate valve on a Herbie main drain, if the gate valve is plumbed horizontally? Will a Y-style check valve (pictured) still work properly, if plumbed horizontally? I believe this is also called a Wye Check Valve...

I am in the process of setting up a new 125g display tank with a three drain Herbie overflow from Modular Marine. I have my primary drain flowing to my fleece roller and the emergency drain dropping directly into my pump chamber with and air gap so I will hear audible splashing and see bubbles...

I've decided to add a smaller nano tank about 25G to the sump of my 90G. I'd like both tanks to be filtered by the same filter roller - hopefully a single one. Can I use a tee fitting to plumb the main herbie drains from both tanks into the same filter roller (Clarisea)? Or is it gonna make my...

Hello I’m currently installing an aquarium in my wall and need some help with the plumbing as I am stuck. Hopefully I have some fellow reefers out there that would like to take part on this journey with me because I could sure use some wisdom. I have a 220 gallon custom tank drilled at one...