ATLCF2 Coraffix Cyanoacrylate Adhesive, 2-Ounce

This glue works for me every time to keep frags firmly in place, my one regret is not paying attention to the fact that this is only 2grams which is not even half enough for my application but as usual I recommend

I used this glue to rescape two tanks, an Evo 13.5 G and a 30G Waterbox. It was enough to glue the rockwork and the frags over three days in combination with a large size Tunze Instant Coral Gum. Only once did I have to cut the tip more and just a couple of toothpick pricks to keep the glue flowing between uses. It is thinner than IC glue, but that is helpful to flow into tight spaces once you get the hang of it. Very good deal. Works well with instant set spray also.

******* Amended and adjusted ratingThis stuff is extremely useful. Fairly thick, doesn't flow that much. Stays pretty much right where you put it.I used it to glue some rocks together for my aquarium and to build an overflow box out of corrugated plastic sheeting. Holds up well and doesn't get all over the place like the standard super glue. Much cheaper too.***********I have to reduce my rating of this. Initially the supplier I purchased this from was out of the 2oz bottles, so sent me two of the tubes. The tube type is great. The 2oz squeeze bottle has a different formulation to prevent hardening in the bottle. It does not set as well or stay in place as well as the tube. It skins over in a way that makes it difficult to use placing stuff underwater; the skin doesn't break and reset like the tube. Out of the water it is too runny and doesn't stay where you want it to. I ended up gluing a zoanthid shut and it eventually floated away. Never had issues like that with the tubes.One tip with the tubes; if you squeeze too much, let the excess run out onto some scrap paper or a paper towel, clean the tip, then place a pin or small nail in the tip before capping. This prevents the glue in the tip from hardening and blocking off flow, as well as preventing the cap from hardening to the tip (usually only happens if you get an large amount of glue in the cap. I believe the cap is a different material designed to not adhere to the tip.).

I love this epoxy. It bonds quickly once wet, and it has a pretty good hold. I like to use it with the underwater epoxy putty from the same company: I mix the putty, pour some CorAffix on it, and then immediately put the frag in place in the tank. The hold is great after a few days.A few lessons I learned the hard way, though. First, this stuff will bond skin to skin once wet. If you notice immediately (which I did, thankfully), you can easily separate the bond and just peel the CorAffix off a few hours later once it dries. Some CorAffix ran down the side of the bottle and I took off my gloves when putting this away and didn't notice the spill. It stuck two fingers together after two or three seconds of contact, but I easily separated them and all was well.Second, this stuff bonds fast underwater and that means if you use too much, you'll get a trail of CorAffix hanging off your bond like a sweeper tentacle. Be sure to use an appropriate amount and, if you want, use fragging scissors or something else to cut the excess trail off (don't pull on it, you might pull the bond free).Overall, I recommend this product to others. As I mentioned, though, I prefer to use it in conjunction with the epoxy putty.

There is a technique to this, The glue above water is affected by gravity but becomes buoyant once placed below water. For my tried and true technique you will need a cup of rodi or tank water that will be discarded after. Add some of the adhesive to your coral frag or rock and quickly dip into the cup of water, remove from the water and add more glue, re dip into the cup of water then place into your final destination and hold it for 15 seconds. If the coral or rock still wiggles you can repeat the process. each time you repeat the voids will fill up and eventually will hold and cure. I was impressed, over time coraline or algae will grow over any exposed glue. you can peel off extra visible glue also, it takes some practice.

I've been using cheap gel super glue without problems for a while now. I've used multiple types. I figured I would save money and try this one assuming it would be similar. Unfortunately if I try and glue a frag to my rock, it won't stick for nothing. If I do, I have to glob about 10 times as much as I would with my older glue. Also when making frags, I have problems getting them to remain attached. For me it is too runny. I already bought my old glue again because this glue is worthless for me. I'm sure it works for people, especially using some tips mentioned in other reviews, but I don't want to have to keep globbing glue and dipping in water, and globbing more and dipping in water for it to stick.

I have used several glues in the past and I found all of them to be too runny. This is a great glue that holds in place and is easy to work with. The trick is to use it with putty.1 . Mix a ball of putty up then glue the bottom of the ball. Put the putty into the rock work where the frag will go.2. Then make sure to completely dry the frag plug off before gluing. Put glue on the frag plus and stick it into the ball of putty in the rock work. Make sure to hold it in putty for already 10 seconds.3. Once in putty then form putty around plug and rock work.I found this method to work 100% of the time.

This is the most liquidy coral glue I have ever used in my life. I'm sure it is fine for gluing frags to plugs but gluing something heavy to a non-flat surface is extremely difficult with this glue. Maybe I got a weird batch.