Driftwood and your tank....

[Lupin]

Yeah but what does it do to your fish though

is it harmfull..

No, it isn't. I've explained my bit in the article I linked you.

Now this is where we shall start. You will discover that a lot of betta enthusiasts often use Indian almond leaves and actually rave for its benefits. The main reason is that their antibacterial properties minimize the chances of bacterial infections, improve health, stimulate the natural environment of fish who hail from soft, acidic waters, stimulate breeding conditions and harden scales in which case as mentioned before does minimize skin diseases and pathogens resulting in bacterial infections that dwell on the epidermis of the fish.

 

[gomezladdams]

Tannins are what turns the water color when the wood is soaking.
They are actually good for some fish,its just that most people dont like the tea colored fishtank.Depending on the wood and how long its been drifting,it could leach tannins for weeks,months or years.

 

[ohhsweetness]

ok then