Weld on 6 works great for that i fixed many cracks in reactors with it. Nasty stuff do not get it on your self or anything valuable to you, will eat cement
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360 gallon sps reef, 180 gal sump, bubble king supermarine 300, 4xmp40Wes, 2 x 6215 tunze waveboxes, 4 ghl mitras
360 Reef Tank
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