I s it possible to put pebbles from the beach into my fish tank without harming the fish?
Ive heard that if you boil the pebbles in water they will be OK because you have killed all the germs and parasites. Can someone tell me please as these would make a good decoration, Thanks

Yes, you can use them as long as you sterilize them in boiling water first. I would give them a good scrub off before that even.