AquaStik Epoxy Putty

• Underwater cure – hardens whether it's worked in open air, on damp rock, or fully submersed, so there's no need to dry-fit and rebuild outside the tank.
• 5–15 minutes working time – enough time to knead the two parts together and press a frag or rockwork into place before it starts to set.
• Full cure in about 24 hours – after that it holds structurally; corals typically grow over the visible putty within weeks.
• Two colours – Coralline Red blends into rock already covered in coralline algae; Stone Grey suits fresh dry rock and new tank builds.
• Non-toxic once mixed – safe around fish, corals, plants and small animals, so it can be used in a stocked tank rather than only during initial setup.

Two Little Fishies does not publish a pack weight for the size carried here – both colours are sold in the same format, and mixing is knead-to-combine rather than a measured ratio.

• Coralline Red – for an established tank where rockwork already carries coralline algae growth, so the repair or new attachment point blends in.
• Stone Grey – for a new tank build on fresh dry rock, before coralline coverage has developed.

• Suitable for: bonding stony coral frags, gorgonians and loose rock into an aquascape, in marine or freshwater systems.
• Suitable for: reptile and small-animal habitats, and pond hardscape, per the manufacturer's stated use.
• Not suitable for: large structural bonds carrying real weight – it's a frag and aquascape adhesive, not a substitute for engineering a stable rock structure that stands on its own.
• Not suitable for: mixing more than you can place in the working window – small batches avoid wasting putty that sets before you're ready.

Knead only as much as you'll use in the next few minutes – the manufacturer's guidance is to mix small amounts at a time because the putty sets quickly once the two parts are combined. Press pieces firmly into place and hold briefly while the surface begins to set.

• Cyanoacrylate coral glue, for lighter attachments that don't need epoxy's bulk or working time
• Aquascaping rock or live rock, for building the structure this putty bonds together
• Frag plugs and discs, for mounting coral fragments before final placement

Covered under the consumer guarantees set out in the Australian Consumer Law. Standard freight.

Can I use this underwater, or do I need to work outside the tank?

It cures underwater as well as in open air or on damp rock, so you can knead it and press it into place without lifting rock out of the tank.

How long do I have to work with it before it sets?

Two Little Fishies states 5 to 15 minutes of working time once the two parts are mixed – knead only what you can place in that window.

Is it safe with fish and corals already in the tank?

Yes – the manufacturer states it's non-toxic to fish, plants and small animals once mixed, so it can be used in a stocked system rather than only during a fishless setup.

Which colour should I pick for a brand-new tank?

Stone Grey is intended for new builds on fresh dry rock, before any coralline algae has grown in. Coralline Red is the better match once your rockwork already carries coralline growth.

How long until coral fully hides the putty?

Two Little Fishies notes that corals typically grow over the adhesive within a matter of weeks once placed, so use as little as you need rather than covering a large area.