I've kind of changed my stance on the Waterweld you can buy at Home Depot Gig'em. I may have been the one to introduce you to the waterweld... I can't remember. As they have increased the price on it, I actually find it a better deal to get the TLF aquastix putty from BRS. It sells for $9 for a 4 oz stick. Waterweld is now $6 for a 2 oz stick at Home Depot so to compare directly, it'll cost $12 to get 4 oz of waterweld versus $9 for 4 oz of TLF aquastix putty. It was a better bargain 2-3 years ago when it was only $3-4 for 2 oz of waterweld.Also, after 3 years of using the waterweld and more recently switching to the TLF reef putty, I find that the cure time is much quicker for the TLF putty, allowing it to set quick enough to hold my corals in place without me hanging on for 15 mins until it sets, leaves less of a residue on my fingers when mixing the putty, and blows up my skimmer less than the waterweld stuff.
I still think the waterweld is a great product and an easy option to purchase when you need putty quick... but I find the value better with the TLF putty if you can get it with free shipping during one of our BRS group buys and for the reasons I mentioned above.