Thank you everyone for your help!
I can now supply some more information, but to me it is still confusing.
What is your Alk? With that high of Ca it should be taking off.
Currently my alk
is about 8.5 dKH
. My pH is about 8.0. I have been using vinegar to kill off Aiptasia and it has lowered my pH a little in the last week.
Also, I replaced the RO
membrane about 6 months ago and I checked both my RO
makeup water and my freshly prepared saltwater and both tested negative for phosphate. I have been thinking about getting a DI
filter, but since I don't detect any phosphate with my kit I have hesitated in spending the money. I use Instant Ocean salt which has always tested as having 0 phosphate for me.
I only have two fish, so I don't think I feed that much - on average it is probably about every third day. Actually, my fish look like they are a little overweight. I use flakes called Aquadine. I went to their webpage to find out how much phosphate they have in them, but they didn't have this information posted. I don't use Kalk
currently because it didn't seem to be effective for me. I read that you really need to have a certain level of CO2
in your aquarium for this to be effective and since I only have two fish I am assuming that my level is too low.
Phosphates inhibit coralline growth plus it also takes a tank some time to age.
Maybe this is why I haven't been successful yet in getting corraline algae to grow. Also, I only have an RO
system right now, but it seems to be effective according to my testkit results. My Salifert testkit is rated for use for salt or fresh water.
Calcium and alkalinity need to be in balance. If they are in balance and you have the proper amount of magnesium, then you won't end up with any snowstorms.
I wonder if this isn't the heart of my problem. I don't have a magnesium test kit, but maybe I need to get one. Could the algae have used up all my magnesium and Iodine? I added a little of both these recently, but I am scared to add too much since I can't test for them right now. Should a magnesium and Iodine test kit be a standard part of my repertoire?
Well since almost all foods contain phosphates it looks like this is just going to be an ongoing problem that must be contained through judicious use of food and water changes. Is this what everyone does to manage their phosphate levels?