thanks minxfishy always like to check no all ok got some cracker pieces off jagz today andthey look boss but thank you for your advice thanks wazzaNo wont harm the fish at all. Some species apparently even prefer the tannings. Just make sure you've given it a good clean/scrub in hot/boiling water to make sure no nasties are on it.
yes when i get something i always check thats what is great about this forum theres always someone there to help and i might like the colour lol thanks anyway matchstickman for your helpyes some acid loving species like tannin it wont harmyour fish alltall