400 show tank w/ pond shield

  • We are currently upgrading MFK. thanks! -neo
My filtration got here today earlier than expected. So now im wondering if the tank is safe to set up unethe basement? Its been dry for 3 days? What's the time limit to be fairly sure there are no pin holes or micro bubbles in the epoxy? Id like to have it up and running on my next weekend

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Sad part is there really isn't a "time frame", a leak could develop immediately, tomorrow, next week or next year :( Mine was built in the basement so it was a risk i took. You may as well move it as you could wait a month with no leaks and the move itself could cause a micro crack that starts to leak. So no matter what you are gonna have risks, unfortunately.
 
Lol I hear you, that's the fun about plywood tanks! They can last till next week or next few decades....
Getting on that subject... im wondering if a plywood tank does fail in the future, do they just start a leak from somewhere? Or do they just blow out a side lol. I would imagine it would only burst if the tank had been leaking for a while un noticed??

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well i can talk a little on this. although i did not have a failure with my last tank. i had a pretty bad water leak on my overflow because of multiple design changes and silicone not adhering to the acrylic. so i decided that since the tank was down already and it had been moved by people other than me that i would reseal it. well after much though i decided that since i would have to replace the bottom and back of the tank due to the water damage it would be easier to just start over.

so i started to dismantal the tank and after removing all the screws, it took a sledge hammer and a nail bar to separate the walls of the tank. i used 6 ounce fiberglass cloth in the seams and also used tit-bond III and screws to assemble the tank. the one thing i did find though is that the pocket screws used to assemble the the side panels were really rusty so i may have had a side fail at some point.

so i think that with care i think it would probably be slow leaks unless you had a joint get saturated then i think it would be like caving in the side of a pool kiddy pool
 
Do you think the rusted nails were from an actual previous leak or just from moisture or splashing getting on the outside? I would guess if a leak had started, it wouldn't stop on its own or you would have noticed it? All my seams are glued and fiberglassed and deck screws every 2 inches... a wall blow out is possible but unlikely in my eyes with all the extra support in the corners.

I guess a plywood tank (if built right) is almost as safe as a glass aquarium. The only problem is there are no standards set for a plywood tank to be "built right"

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they were caused by the overflow leaking and the water seeped into the corner where the pocket screws were. but yea i would say that a plywood tank is just as safe as a glass tank if built right.
 
Well here's something a slight bit concerning. I cuz my holes for bulkheads close to the top of the tank and checked thickness of the epoxy on the pucks that were cut out and they are only about the thickness of 3-5 papers... while I was brushing the epoxy on I had problems with it running a little. So my thoughts are that its 3x as thick just a few inches down the wall if not thicker...
Its proven to hold water and gerald with max acr said it will hold water at the thickness of a paper lol hope he is right

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