>It's not ideal and I'll replace it with some Two Fishies Reborn <
Yeah, good luck with that. I've been trying to purchase it for many months now. Sold out everywhere. I even sent an email several months ago to TLF to ask whether it was ever coming back. Julian answered and said it would be available in a week or so...that was many months ago.
I've taken to using old coral skeletons. I have a LOT of old coral skeletons as every few years I have to break away the top 1/3 of my tank. I've actually found the skeletons to be working super well. Amazing how efficiently Montipora skeletons break down, I've had to use very low CO2 flow rates. I figure I have enough skeletons to charge my reactor for another year or so. What then? Don't know yet.
FYI, I clean old skeletons by soaking in a bleach water solution for a few weeks, then rinse well and let dry outside in the sun/wind.