Material for sump baffles

TheDragonsReef

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Im looking for material to make sump baffles and an overflow that i can glue to a glass tank. Must be something that i can easily cut with a tool or jigsaw. And obviously must be saltwater safe.

Would this work?
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redfishbluefish

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1/8 inch is a bit thin. How big is the sump. Dependent on the sump size and design, the weight of the water could bow this thin material. And as far as safety, any acrylic (aka Plexiglass) is reef safe. Just note that it will swell oh so slightly. Polycarbonate will also work well for baffles.

As far as attaching your plastic baffles to a glass tank, without question, the silicone you should us is available at HD in the acrylic sheet department and looks like this:
Silicone Plastic.jpg
 

scrappy35

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I used 1/4” polycarbonate from Home Depot and the silicone shown above for all my baffles that are at the same water level. Then I used 1 glass panel for the baffle between refugium and return pump, no flex and a much stronger bond. My baffles are 17.5” wide also since I used a 40 breeder. This seemed to push the limits of 1/4”. The silicone sticks to the glass fine, ok to the poly, so use plenty to create a dam effect to hold the end of the baffle. The difference in water level between my return side and fuge is 9” in height = a fare amount of pressure against baffle. That is why I used glass for the last one, but it gave me about 9-10g for tank drain back. You could always glue 2 pieces together for more strength also.
Hope this helps.
 

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TheDragonsReef

TheDragonsReef

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Thanks guys, I already have black aquarium silcone, but for a few sections i need to glue acrylic to acrylic, whats a reef safe adhesive for that? Cause i know silicone doesnt stick to acrylic as well as glass


You can buy ready made baffles you just silicon in.
I want certain dimensions, im building an all in one low frag tank with a refugium so i need the spacing and sizing to be perfect.
 

redfishbluefish

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Thanks guys, I already have black aquarium silcone, but for a few sections i need to glue acrylic to acrylic, whats a reef safe adhesive for that? Cause i know silicone doesnt stick to acrylic as well as glass



I want certain dimensions, im building an all in one low frag tank with a refugium so i need the spacing and sizing to be perfect.
To bond acrylic to acrylic, you want Weld-On. If your cuts are clean and smooth, I believe it's Weld-On #4. If edges aren't smooth (need to fill saw cuts), I think it's #16. Please double check the types of Weld-On needed...I'm not 100% sure.
 

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