sump setup question

i have a 3/4 bulkhead in my drain chamber I use it for a return for a skimmer.

It pulls from the bulkhead and dumps into a sock. I am currently using a reeflo blowhole pump.

I want to set up a another loop with my media reactor and my UV filter, I want to use a second reeflo blowhole to power the second loop. I do not want to drill for a second bulk head.

I want to install a Y fitting off the supply and have both pumps pull through the Y fitting.

Will this decrease flow to much or will it just pull what it needs, neither pump need full power so I dont think it will be an issue.

Any input would be great

FYI.. I am draining the skimmer into a sock and the UV loop will dump into my sponge before the return for the DT.

Thanks

Here is a pic of my set up before I got the Reeflo...