Another 6 weeks have passed since the last ICP test was performed and I've been eager to know if I have managed to address the tin issue or not. In the intervening period I have performed 7 water changes (14%), swapped out a couple of small pumps that were running the refugium (they came from my previous tank and looked absolutely fine to be honest but I wasn't taking any chances) and run a small amount of Cuprisorb (70ml, the recommended amount for my volume of water) in a reactor for a week prior to sending off the water sample. Apparently as well as being effective against copper Cuprisorb also has the benefit of removing other heavy metals from saltwater so I figured it was worth a try.
The tin levels have fallen by half, yay! Was one of the small refugium pumps to blame after all or has the Cuprisorb adsorbed it (unlikely since it has not changed colour at all) or maybe whatever was leaching the tin into the water has now stopped doing it? I really wish I knew. Still it's on the way down now finally and for that I am really happy. Hopefully in another 6 weeks time the level will have dropped again and maybe even be back down to normal. Fingers crossed for that!
As for the rest of the results, they all look pretty good to me. Iodine is still a little on the low side but it's better than the previous test so one more slight adjustment to the amount dosed and I should hopefully be about there. Frustratingly nitrate is still below the recommended level, I may have to start dosing it at this rate, what an odd thought that is.
Hi, my name is Lisa and I live in Derby, UK. I am a self-confessed reefaholic!