I have just picked up a 2nd tank from ebay (80 quid for a full set up Juwel 125litre with stand - 6 months old!) and am looking for some decoration other than the usual tacky stuff - i have found some nice stones from the garden and am boiling them now (wife thinks I am making rock soup!) and will test with vinegar before putting them in. I also have a couple of Sea Urchin shells picked up whilst on holiday in Cornwall - if I boil these will they be OK to put in? In fact what about any other shells? I cant see any reason why not I just thought i would check!
Cheers
Stu
Cheers
Stu