ISTA Instant Glue Tube 4g Unit — Cyanoacrylate Coral Aquarium Glue

ISTA Instant Glue 4g — Single Cyanoacrylate Tube for Aquarium Use

ISTA Instant Glue in a single 4g tube is the individual format, perfect for reefkeepers who only frag occasionally or want to try the formula before committing to the 2-pack or the 25-tube counter top display. A single 4g tube is enough to glue 15 to 25 standard-size frags. Each tube is hermetically sealed and comes directly from the ISTA counter top display.

A cyanoacrylate gel formulated for aquarium use

The ethyl cyanoacrylate gel formula doesn't run or drip and stays exactly where you apply it, unlike thin super glues that disperse in water. The gel cures on contact with moisture, which means it works on dry, wet, or fully submerged surfaces for quick adjustments inside the tank.

Aquarium applications

• SPS and LPS coral fragging — attach frags to plugs or rocks
• Aquatic mosses — Christmas moss, java moss on driftwood
• Aquascaping — aquatic plants, hardscape decoration
• Small repairs — decorations, driftwood, stones, ceramics

Which ISTA format is right for you?

Three formats are available depending on your usage:

• Single 4g tube (this product) — occasional use, first try, top-up purchase
• 2-pack of 4g tubes — regular but moderate use
• 25-tube counter top display — heavy fragging, frag swappers, retailers

The single-tube format is the most economical option for reefkeepers who don't frag daily — no need to pay for a bigger pack that ends up drying out in a drawer.

How to apply

1. Pat the frag base or plug dry with a paper towel
2. Apply a small amount of gel to the contact surface
3. Press the frag against the plug or rock for 10 to 20 seconds
4. Return to the tank — the bond completes underwater within minutes

Close the tube tightly right after use to preserve the remaining content. Once opened, a 4g tube stays fluid for only a few days, regardless of brand.

Precautions

Avoid contact with skin and eyes. If glue contacts skin, use warm water or acetone — do not try to peel it off. If it contacts eyes, rinse thoroughly with water and seek medical attention.

Why buy from ReefSolution

To round out your fragging station, ReefSolution offers:

• Reef Casa Frag Plugs 25x — ceramic frag plugs for coral propagation
• Aquavitro Crescent Coral Cutter — precision fragging cutter
• Aquaforest Plug Rocks 24pk — biologically neutral porous frag plugs
• Brightwell Frag Recover — coral dip for fragmented coral recovery

Secure shipping across Canada. Free shipping available based on order value.

Frequently Asked Questions

How many frags can I glue with a single 4g tube of ISTA Instant Glue?

A 4g tube typically glues between 15 and 25 standard-size frags onto plugs or rocks, depending on how much you apply per bond. Larger frags or multiple bonds will use more.

What's the difference between the single tube, the 2-pack, and the 25-tube counter display?

It's the exact same cyanoacrylate gel — only the format changes. The single tube is for occasional use or a first try. The 2-pack suits regular but moderate use. The 25-tube counter top display is built for heavy fragging, frag swappers, and retailers.

Is ISTA Instant Glue reef-safe for corals and invertebrates?

Yes. The ethyl cyanoacrylate formula does not leach amines like some two-part epoxy putties, and it has been trusted by the reef community for years. Once cured underwater (a few minutes), it's chemically inert and does not affect water parameters.

Does the ISTA glue actually work underwater?

Yes. Cyanoacrylate gel cures on contact with moisture, so it sets even submerged. For a faster initial bond, we still recommend patting the plug base dry before application.