So with space a premium in the cabinet I decided to make a custom sized sump. So I drew up my plan keeping it as simple as possible with 3 sections. Skimmer, Refugium and pump section with a bubble trap between the first and second section. I used tec 7 for the silicone which i also got from woodies. If you dont feel comfortable using this your LFS sells the aquarium safe type however once it has the fishy symbol on the side and with reference to their site it is safe to use in the aquarium but be careful as the clear one is not!!







I made a bit of a mess with the middle baffle as I put a bead down first and slid the baffle in as I wanted to get both sides, in hindsight...

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