to ReefSanctuary, a real Sanctuary of reef forums, with lots of very nice members
fixed your thread title added the word sump... might help you get more & better feedback
I siphon mine like Greg does ^ , similar to a wc, a couple times a year.
during wc, I naturally siphon out water, but use a pump to add the new sw back - I can see where your way would work too, using a pump
I am currently using a sicce (the same as the skimmer pump RSM 250), a member of the RSM club shutdown his tank & Pmed me & then sent me all his pumps... shipped for $60, a great deal.
on the title change LOL I may have saved the mods and admins from having to deal with some member who just could not resist and decided to hijack the op real question
Thanks for the pump advice.
On the title change, you are clearly the enemy of fun.
Cheers mate ! Thanks to everyone who makes being a mod here without drama & helps keep RS a Sanctuary of reefing forums and very special !
Ha!
A bucket top shop vac with various attachments does the trick pretty well.