Gel Coat for Plywood / Fiberglass tank Good or Bad?

[mehaffydr]

Question for those who have constructed Plywood tanks. I am gathering materials for a Large plywood tank 96" x 72" x 32" with Glass on 2 sides. i will be fiberglassing the entire inside and I am looking at what to coat the inside with. I am thinking of using Gel coat thinkiing if it will hold up to salt water on the bottom of a boat it would be a good coating. But all of the plywood tanks I see in this forum seem to be using epoxy like Corotech or Pond Shield?

 

[Flippers4pups]

Bump

 

[h2so4hurts]

I used Total Boat High Performance Epoxy to wet out my fiberglass. Worked great and it wasn't very expensive.

 

[mehaffydr]

I used Total Boat High Performance Epoxy to wet out my fiberglass. Worked great and it wasn't very expensive.

Was that also the final finish or did you paint with something else for the final finish?

 

[h2so4hurts]

Check my build thread. I roughed it up with 220 grit and did two coats of pond armor because I wanted a black background.

 

[AlexG]

I used pond armor for my plywood tanks. Its easy to work, low VOC, and its aquarium safe.

 

[h2so4hurts]

Yes, but it stinks, badly, keep your windows open and run fans if you're doing it in your house.

 

[Reefhack]

Has anyone used Rubberized paint for their tanks? It’s used for ponds and other applications with low VOC but I’m wondering if it will hold up like epoxy?