Thank you Subculture. I will follow up on that solenoid.
My ballast tank walls are 1/4" thick and made of epoxy using the casting technique I described earlier. They must be pretty strong because I fill the tank to about 85% to 90% to submerge. In testing I've filled the tank to about 95% thanks to that amazing little water pump. The epoxy shrinks as it cures and I think that might contribute to its strength. I figured the pump would leak first.
My ballast tank walls are 1/4" thick and made of epoxy using the casting technique I described earlier. They must be pretty strong because I fill the tank to about 85% to 90% to submerge. In testing I've filled the tank to about 95% thanks to that amazing little water pump. The epoxy shrinks as it cures and I think that might contribute to its strength. I figured the pump would leak first.
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