Let me start by saying I've tried my fair share of aquarium sealants, and AG Adhesive Guru's 100% silicone is a game-changer. The first thing I noticed? That satisfying 'snap' when you break the seal on the tube - you know you're getting fresh product.

The application was smoother than other brands I've used. It spreads evenly without being too runny, and here's the kicker - it was dry to the touch in just under 2 hours when I repaired a leaking corner in my 55-gallon tank. By next morning (about 18 hours later), it was fully cured and ready for water.

What really impressed me was how it handled decorations. I used it to secure some heavy driftwood to the tank bottom, and that stuff isn't going anywhere. The bond stayed flexible enough to withstand my clumsy cleaning but strong enough that my pleco can't knock it loose.

Now about that smell reviewers mention - yes, there's a slight odor during application (what silicone doesn't?), but it dissipates quickly. Pro tip: Do your sealing in a well-ventilated area unless you want to 'hear colors' like one adventurous reviewer!

The only downside? The price has increased since some bulk purchases were made, which is disappointing for frequent users like myself who go through this stuff regularly for multiple tank projects.

Bottom line: If you need a reliable, fast-curing aquarium sealant that won't harm your fish and actually holds what you stick with it, this is worth every penny. Just maybe wait for a sale if you're planning bulk purchases!