How do you dose ? Is this the chemical Iodine or some sort of supplement ?3) Yes - Iodine should be replaced by water changes - BUT, seeing that I have +-40 hermit crabs and a coral banded/boxing shrimp in my tank, as well as 2 types of xenia (incl pulsing) - I manually doze iodine 2 to 3 times weekly....
Thanks, I must start dosing. I don't have a huge amount of crustaceans but the effect on the corals is what I am concerned about.Hi Warr - I started using Red Sea Iodine - But changed over to a chemical iodine. After a VERY tiny bit (I buy it in 50ml bottles and mix it with 250ml RO water) and seeing no "bad" reactions in my tank - I VERY slowly started increasing the iodine-RO mix to +-15ml to 20ml every time I doze (between once and twice a week - sometimes to 3 times a week - never more).....
yes makes sense,thats why i do a large water change at times and still continue to dose supplements that are showing low in my test kits.by the way i never dose iodine, as ive read somewhere its a fuel for hair algea which i have here and thereWater changes will never make up for stuff that is lost unless it is a 100% water change. Do the math:
If your levels of X are 100% when you start your tank
then they get used up and go down 40% to 60%
You do a 50% water change and they go back to 80%
Now they get used up a bit more, so say go down 30% (because it wont be used up as quickly if there's less of it) to 50%
50% water change brings it back to 75%
Now the 50% water change is pretty generous and not that likely to happen. As you can see you can never bring the levels of anything that is used up back to the initial level, ie. the level found in NSW or hopefully salt. Because of this you do get some salts that can provide higher than natural levels of alkalinity and calcium.
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