Aquarium Silicone Clear Sealant - High Elasticity, Safe for Fish, Solvent-Free, Ozone-Resistant, Transparent 10.14 Fl Oz, 1 Pack

Using it to seal up a bioactive terrarium. Works great. Easy to use and apply. Use in ventilated area. Dried and stable in 24hrs with no odor. Highly recommend. One tube will cover edges of 5x2x2 enclosure. 5 stars. Get it.

In an emergency I needed to address a 55" gallon aquarium that was leaking badly in two or more places....this stuff works amazingly (I applied it over existing factory sealer, not sure if that was recommended and ordinarily SHOULD not be but this situation was unique and I didnt want to risk the structural integrity of the entire tank by removing existing seal) ...and I did not wait the entire 24 hour curing time because of the urgency I started filling in under 4 hours...leak competely gone. It's been several hours and still no sign of ANY leaking at all. ALWAYS follow the recommended curing time and application process but from my experience I had no issues deviating with this product and situation. The smell is a bit strong, but the overall silicone was extremely efffective and totally worth the money.

It cured over night, has no smell after cure. It’s clear, seals my fish tank perfectly and was easy to use, you just need a caulk gun.

Works great. My 90 gallon tank is again holding water. I used an exacto scraper set to remove all old sealer. Cleaned the whole tank, then used alcohol wipes to clean the sealing surfaces before using. I let it cure several days to be sure it sealed well. If you are resealing an aquarium, you must remove the old sealant! if it is leaking, it isn't working and just sealing over it won't fix it. This is a good product. I hope I won't need to do it again any time soon, but if I have another need, I would buy this again.

I used this on an older aquarium to patch up a small weak spot but I also used it for some other seals around the home, as well. Seems to work, so far. Odor is not great, so make sure to have good ventilation while you’re applying it. After it cures, however, there’s no odor at all

Great for gluing aquarium rocks together.

This product is so good, and I have used it in a lot of ways. I had to write a review. So lets see what have I used this amazing stuff on. I should first say I have a bearded dragon and most of the use was for her in some way. I took a 48"x24" glass door reptile enclosure and completely sealed ever opening with this stuff. It was now water tight. The enclosures I get are basically pieces of siding cut and then bolted together. I use this stuff on every enclosure. To air tight everything basically inside. its also because the enclosures I by have a very small corner gaps and the sand substrate I use can slip out on too the carpet. Not only does this sturdy the enclosure. This stuff made it water tight and escaping cricket proof. I used it to fill in deep cracks and holes on my bearded dragon climbing wood. This was done to not give the crickets to many places to hide. I used it to seal a sink and faucet. I glued creek rocks to a plastic container with moss to make it look astatic. I have used it to glue rocks and features in place for a turtle tank. And speaking of gluing. Be careful and don't use to much to glue things in place. Stuff grabbed so hard even after cutting most of it from the glass. I still ended up pulling apart into pieces. One of her cave hides. You put this stuff on and what ever you used it for, it is staying right where you put it. I even used this stuff to hang two fire detector mounting plates to the ceiling. While the odor is strong at first. it goes away soon after use. So what lead me to buy this the firs time. Well it was that it was aquarium safe. That meant I had a very low chance of this stuff injuring her. I still removed her every time because I don't want to take the chance. All i can say it she walks on that stuff a few times a day and I have had no issues. But I think it is safe to assume once dry its ok. But I am no expert and I advise you to seek a professional with any vet questions. You can also use this stuff to make some tank items by mixing sand in so its like a kind of clay and when dry its stable enough to walk on but only shaped how I want it. Like I said its amazing. So far I have joined glass and glass, glass on metal, concrete and wood, sand and plastic, plastic to plastic, plastic to glass, plastic to wood. Oh and I used it to fasten a stainless screen around a plastic hole.

I wanted to make rock covered pvc pipe hide for my pleco and this worked great to glue the rocks to the pipe. I let it cure for 48 hours to be safe before I put it in the water.