Aqueon Silicone Sealant Clear 3 Ounces

This is one of those products that isn’t exciting until you need it, and then it becomes the most important object you own for 48 hours. If you keep fish/turtles, you eventually learn that water has a hobby: finding the one microscopic weakness in your setup and exploring it with enthusiasm. A drip starts as “eh, that’s probably nothing” and escalates into “why is my floor a wetland” with absolutely no warning or mercy. This silicone is the fix for that. I used it for aquarium-related sealing/repair work (think small reseals, patching a suspect spot, sealing a piece of equipment or a tank accessory where you want a watertight bond). It goes on clean, it’s clear, and it behaves like you want a sealant to behave: it doesn’t feel watery, it doesn’t feel like it’s instantly falling off the surface, and it doesn’t turn into a weird rubber noodle the second you look away. It’s also a 3-ounce tube, which is the correct size for “I need to fix a thing” without buying a construction-grade caulk cannon that makes you feel like you’re sealing a submarine. Now, let’s talk about the part nobody wants to talk about: patience. The hardest thing about aquarium silicone isn’t applying it. The hardest thing is not touching it afterward. This is a product that demands you stop being impulsive. You apply it, you smooth it, and then you let it cure fully before water contact and livestock. That’s not optional. That’s the treaty. That’s how you avoid turning your tank into a chemistry-themed horror story. So yes: clean and dry surfaces, apply a proper bead, smooth it, and then let it cure like an adult with a calendar. Your future self will thank you. And because my house runs on turtle rules, Bob The Magical Talking Turtle absolutely supervised this operation. Bob The Magical Talking Turtle is an emerald-shelled sage with red markings behind her ears and the calm confidence of someone who has survived cosmic nonsense. She is also, crucially, a turtle who considers her tank to be a sovereign territory. So when she saw me working with silicone near her realm, she stared with the intensity of an ancient judge watching a bridge get built. No blinking. Just pure administrative energy. I swear Bob The Magical Talking Turtle was thinking: If you seal this poorly, the kingdom floods. If the kingdom floods, you answer to me. And here’s the thing… she’s not wrong. Because leaks aren’t just “messy.” Leaks are chaos. Leaks are instability. Leaks are the kind of slow creeping problem that makes everything else worse. Water level drops, filters act weird, heaters get exposed, humidity spikes in the wrong places, and suddenly you’re doing emergency logistics while your turtle watches like “interesting. So this is what you call stewardship.” This silicone is basically the opposite of that chaos. It’s the boring, clear line between “stable realm” and “wet disaster.” Now, the sock lore moment — because Bob The Magical Talking Turtle insists reality is a story. Bob has Ragged Cotton Socks in her collection. Old, tough, venerable socks that have survived because they’re preserved by magic through time and space. They aren’t flashy like Sun Socks or Moon Socks. They’re not woven from moonbeams or lava silk. They’re the socks you wear when you’re doing real work: repairs, maintenance, the unglamorous stuff that keeps adventures possible. This sealant is the Ragged Cotton Socks of aquarium supplies. Not glamorous. Not something you post pictures of. But it’s the thing that quietly keeps the whole world from falling apart. Also: it cures clear, which matters more than you think. A sloppy obvious seal looks… sloppy. A clear seal lets you do a repair without turning your tank into a visible arts-and-crafts regret. Once it’s cured and you’re back to normal, you don’t feel like you permanently scarred your setup. You feel like you fixed it. A few real-world notes from someone who has learned the hard way that water always wins if you let it: Prep matters: clean/dry surfaces = better adhesion. If you try to seal over moisture, you’re basically hoping. Hope is not a plan. Apply with intention: a consistent bead beats a chaotic blob. Smooth it gently and don’t overwork it. Cure time is sacred: let it fully cure before reintroducing water/animals. This is the difference between “repair” and “mistake.” Smell/ventilation: like most silicones, it can smell while curing. Use it in a ventilated area and don’t hover over it like you’re trying to inhale the concept of progress. After I used this, I stood there staring at the repaired area like a nervous parent watching a toddler take their first steps. No drips. No seep. No slow betrayal. Just… stability. Bob The Magical Talking Turtle did one slow blink, then turned and climbed onto her basking spot like the matter was settled. That blink is the highest rating you can get from her. It means: The realm holds. The water stays where it belongs. You may continue existing. So yeah. If you keep aquariums or a turtle tank and you want a reliable clear silicone for small repairs/seals, this is a solid buy. It’s simple, it works, and it’s the difference between “tiny maintenance day” and “why is everything wet and why am I emotionally sweating.” Five stars. Stable kingdom. Dry floor. Bob The Magical Talking Turtle approves.

I use this to seal enclosures for tarantulas. The small tube is more than enough and perfect size for smaller enclosures compared to the 10oz ones that I use for reptile PVC enclosures. This is my first time using the small tube and it didn’t bust on me like others mentioned. Works great, looks good. I will continue to use in the future.

Used it to seal a leak in a hydroponic pot. Worked great.

I love this stuff. It’s a great waterproof sealant that’s a little elastic but not too putty-like. It doesn’t smell much as you’re applying it, but the smell gets really strong as it’s drying. Be aware it will need somewhere to dry away from you and your pets. It takes about an hour to set to the point where nothing will fall over. It takes a really long time to dry completely to the point where it stops smelling. About a week. I used it to make a basking platform for a snake and it was super important that there was no smell before I added it to his cage. It’s nice and strong though, and I’m confident it will hold up to bleach when I need to sanitize clean his cage. The tube it comes in is awful. The back end of the tube always blows out no matter how careful I am. It happened to all 4 tubes I used. Quite a mess. Honestly it might just be better to cut off the bottom of the tube and use that instead of trying to get the sealant to come out the nozzle.

Drys fast enough and bonds well. It isn't even that expensive.

I use this sealant for all kinds of things that I need to be water tight and non toxic. I use it on the bottom of dog bowls to make them nonskid. I use it as ceramic glue on cracks. I used all over the inside of a metal bird bath that had rust spots. I used it to plug a small hole in a stainless steel dog water bowl. It lasts for years and is dishwasher safe. It is clear but difficult to smooth out so not invisible. I don’t use it on things that are decorative.

Used it on a 20 gallon long tank that had been used for reptiles. The silicone was scratched up, shredded & missing on every side seam. I cleaned & scraped old silicone off it with a razor blade, wiped the application sites with alcohol prep pads & applied the new bead. It stuck perfectly where it needed to & bonded to the existing silicone on the bottom. It shrank down from a convex bead to a concave bead in 24 hours. I washed it out, filled it with already cycled water & had fish inside the tank within 48 hours. It didn't use much of the tube, so I also used it in an emergency to repair a drain hose to a washing machine that had holes in it. I covered the holes with the silicone & wrapped it with electrical tape. No more leaks & it dried even with an initial wet application.

I have a butter dish with a lid that I absolutely love, however once summer came small gnats were coming through the open screen window and getting through the gaps between the lid and dish itself and into my butter. Yuck! I decided to make a gasket so the lid sinks into position and seals so nothing can get in. Worked out awesome! Super happy. Figured if its safe for fish its safe for me.

Great Product. My main tank cracked half way down and I needed a temporary solution to keep my fish alive whilst waiting for my new tank. I applied the solution onto the crack and it was able to significantly stop the water leaking.

not useful, it is the same material used in other silicon sealants. not worth to buy. go for cheap one.

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