OG Reefs
IEMAS Member
I’ll definitely test it before I fill with rodi. That’s just my starting point. I can always go biggerHonestly, I’m wondering if the diameter of the hole is large enough to make a significant impact as a siphon break. You’d be surprised how quickly a small hole can get plugged up. Additionally, the siphon break works best when using a U-tube style siphon. With a straight vertical drain pipe, the siphon break is not quite as effective with a small hole