I also have ghostwood from bloomsandbranches but I would not
buy from them.. I only ordered ghostwood but then sent me a LOT of manzantia pieces instead.. I had to make a big stink to get them replaced with what I actually ordered... Past that frustration I spend a week boiling the wood in a huge tin bucket over a propane flame to reduce tannins enough that it wouldn't send my pH through the floor (and I have very ah rd water so it takes a lot to make pH flux).
After put in a heated lit, planted tank it started the dreaded fungus growth.. and its not gone away.. (been a few months) it's not gotten any worse but hasn't magically disappear like some people claim. I've been keeping otos, angelfish, rainbowfish, cherry barbs, nerite snails, and pond and mts in the tank .. no ones eating the fungus off to any noticeable decline in it but no fish are dead or showing sighs of stress or illness... I'll have to eventually pull it all out and scrub it under boiling water but I'm not in the mood to completely replant my tank after (plants are put in around wood or 'on top' of it (areas where wood is buried in sand).
yes its aquarium safe, but it can take a little work:lot of boiling and scrubbing
ghostwood in tank
10/31 (LARGE mts on there not a baby snail)
this is after many hours over many days of boiling the wood before it was put in the tank.
I'll take a photo tonight when the tank light turns on again to show how it is almost 8 weeks since put in.