underwater silicone or something?
Hello. I am new here and new to having a freshwater aquarium. I recently purchased a 150 gallon aquarium and fluval fx5 filter system. The aquarium was used and came with a rainforest 3 dimensional background installed. The tank has been up and running for a few weeks now. They say you live and you learn and now i'm learning. I neglected to thoroughly check the silicone seal that holds the background in place and now I have lost two fish because there is a gap between the background and glass on the side of the tank that the fish are somehow wedging into and cant get out of. I was wondering if anyone knows of anything I can do to seal this back up to prevent this from happening. Unfortunatley, this space is almost at the bottom of the tank so it's not even something I can drain it partially for repair. I really do not want to have to do a complete water change nor do I have a place for my fish to survive while I wait for silicone to set up. Any ideas of something that would work underwater and be non toxic to our fish?
Welcome to Tropical Fish Keeping forum.
Aside from draining and repair, etc., the only thing I can think of would be to wedge something in the opening. Dry untreated wood might do it, or a small piece of rock. Provided this doesn't wedge it open further and create an even larger opening. Or maybe a heavy bit of rock pushed up agains the backdrop? This would depend upon the "give" in the backdrop.
As a last resort, remove the backdrop completely and attach it or something else outside the tank.
Thank you for the information and your reply. I did place a "shim" in the spot with untreated wood (making sure to have no sharp edges) - I however also have the same concern with it possibly making it bow out more in other spots. I had also contimplated removing it but it's so unusual and cost over $250 new so I kinda hate to tear it out. I was just hoping they made some sort of glue or something to fill in the small gap. It's crazy cause you wouldn't think the fish could even get in the tiny crevice. You should have seen how hard it was to get the "shim" in. Thank you again for your response.
You can buy the pink foam insulation sheets from home depot. I suggest this because it can be cut to any shape, and wont hurt the tank and can be placed in the tank while underwater. Or you could buy a sheet of acrylic also from home depot cut it to size and stick it in place. I can think of at least 4 other things you can do, don't be afraid to use your imagination, without it we wouldn't have half the aquatic stuff we do.
lol - oh I can use my imagination - it's just knowing what is "safe" for my fish that has me tripped up on it. Thank you for the suggestions. I think I might switch it up to the acrylic as that would be strong enough to push in the space and would be clear and not screaming, "look at me and not the fish" lol
I have seen fish fit in the in the most insane place so small it crazy I used to think they had a death wish. I lost 2 tiger barbs in a row to a power head that had an opening no larger then 3/8 of an inch. I had a 3 inch bala shark sucked into a canister filter that had an opening maybe the same 3/8 and the tubing in the canister was only 5/8 ID, he lived because I noticed it in time. I looked in the tank and was like where is he, tore the tank apart and thought wth. I gave up thinking he jumped out and died behind the stand where I couldn't get to him. Then about 10 minutes later a voice told me to check the canister, I almost ignored it because there was no way he could fit.
They sell an underwater epoxy.... Mostly used for attaching coral frags to liverock.
Completely safe for fish, and pretty easy to use.
It comes in a tube- it's kinda rlike a rope- you slice a piece off and mash it together in hour hand until the colors blend together, and it has the consistancy of silly putty. Just fill in the gap and you're done- dries rock hard.
Pretty sure it comes in natural colors like dark gray, maybe dark red, etc
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