Review on 🐠 Premium 4-Inch Pre-Sump Filter Sock Holder (Mount) Bundle with 200 Micron Free Filter Socks – Aquarium Felt Filter Bags for Optimal Filtration in Reef Tank Micron Bag System by Amber Gaiser

Bought for my 130+40v flush mount sump Sturdy construction, very nice part but it doesn't fit over the tank rim. Setups like this are ideal and designed for a DIY cesspool - especially the 40 grower that many growers use - so why not widen the gap a bit. It's a little nerve-wracking to modify a running system for fear of crashing or being hacked, but if you're willing to do it, it works great. It also doesn't hurt to swap out the 200 micron sock for a 100 micron sock. 5 stars for workmanship and material, 2 stars for the equipment.