OohFeeshy
It's only forever; not long at all...
I've been wondering about this for a while, don't laugh
But what actually is stopping you from using ordinary tea bags to create tanninated water (ie, for bettas). Its still tannic acid, right? Surely if its suitable to drink, it's fish safe? Or should I keep my teabags for me? Answers on a stamped addresses post below, s'il vous plait.