Will it fix a leaky plexiglass tank?

100% silicone is for use on glass and not recommended for long term adhesion on acrylics, plexiglass, plastics since they contain petroleum products which will cause the silicone to peel off in time. (MAY be fine for short-term use.) There are special adhesives/sealants for use with acrylics and plastics and they will be labeled as such. Plexiglass, specifically, needs an adhesive method that actually "melts" the plexiglass, which then creates the bond. 100% silicone adhesives/sealants will not do that.

Could this be used safely as a gasket around my filter screen at the bottom of dishwasher used to block food particles around edge of screen filter?

I’m no expert but as it is silicone and it is safe for aquariums once cured, it should be safe for a dishwasher.

Will salt water eat sealant

In general silicon sealants will handle salt water. I used this particular sealant for a fresh water tank, but I have used silicon sealants on my salt water sail boat without an issue. The main problem with all sealants is you need a clean, oil free, and dry surface for the sealant can properly attach to the surface. You need a humid, but not wet environment for the sealant to cure. I suggest placing a well dampened cloth in the bottom of the tank. You don't want water on the sealant, but you need moisture in the air.

After applying the silicone, approximately how many minutes do you have before taking the tape off?

if you mean using masking tape to keep the glue off an area, i would pull it off when it is still wet, and probably wouldnt wait more than 15 minutes to do so. Remember you can spritz the silicone with water to help it cure faster and better.

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🐠 Seal your underwater world with confidence and clarity!

NO SAG APPLICATION - Applies smoothly on vertical surfaces without dripping or sagging for flawless finishes.
FISH FRIENDLY FORMULA - Non-toxic once cured, ensuring a safe habitat for your aquatic friends.
UNBREAKABLE AQUARIUM BOND - Forms tough, primer-free seals that last underwater without cracking or shrinking.
EXTREME TEMPERATURE RESILIENCE - Withstands freezing cold to scorching heat, perfect for any environment.
VERSATILE FRESH SALTWATER USE - Engineered for both freshwater and saltwater tanks, plus vivariums.

Clear Aquarium Silicone Sealant is a high-performance, medium modulus RTV silicone designed specifically for aquarium fabrication and repair. It bonds strongly to glass without primers, cures clear and waterproof, and is non-toxic to fish after full cure. Resistant to extreme temperatures (-57°C to +233°C) and suitable for fresh and saltwater environments, it offers a no-sag application ideal for vertical surfaces. Packaged in a 10.2 fl oz cartridge, it ensures durable, long-lasting seals that keep your aquatic ecosystem safe and secure.

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Color	Clear
Brand	ASI
Item Weight	10.2 Ounces
Liquid Volume	10.2 Fluid Ounces
Full Cure Time	10 Days
Item Form	Fluid Oz
Surface Recommendation	Glass
Water Resistance Level	Waterproof
Number of Items	1
Manufacturer	Gordon Glass Co
UPC	802455893066
Unit Count	10.2 Fluid Ounces
Material	Silicone
Part Number	ASI Aquarium Clear
Item Weight	10.2 ounces
Package Dimensions	12.68 x 1.89 x 1.85 inches
Item model number	ASI Aquarium Clear
Is Discontinued By Manufacturer	No
Item Package Quantity	1
Special Features	Strong
Batteries Included?	No
Batteries Required?	No

Clear Aquarium Silicone Sealant - 10.2 Fluid oz Cartridge

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