Once hardened, will borate dissolve?

[JimK]

if you break it up with your fingers you'll find it gets warm! Really freaky sensation, so dissolving must be exothermic (is that right?)

LOL.....I tried breaking it up with my hands but it's too hard (or I'm just a weakling!).

[waterbear]

When it clumps like that you can break it up with a hammer and chisel or just let it dissolve. I once had a 45 lb bucket of Proteam Supreme Plus that had become a solid lump in the container. I had to break it up into chunks with a hammer and then put them in the pool. They all dissolved in about a day. I never noticed borax to be exothermic on dissolving but calcium chloride certainly is!

[JimK]

When it clumps like that you can break it up with a hammer and chisel or just let it dissolve. I once had a 45 lb bucket of Proteam Supreme Plus that had become a solid lump in the container. I had to break it up into chunks with a hammer and then put them in the pool. They all dissolved in about a day. I never noticed borax to be exothermic on dissolving but calcium chloride certainly is!

If there's still a big chunk undissolved tomorrow, I'll take a hammer to it to speed up the process.