new io alkalinity

If the tank is set up for automatic dosing, and high-alkalinity water is used for changes, the dKH eventually will rise up to match the salt product, assuming no dose adjusting is done. That might be one concern, although I suspect most tanks would be fine at 11 dKH.
 
For most people that keep some kind of SPS or LPS corals, the ALK and CAL from water change is nothing compare to the consumption rate of these animals.
 
Most of the time people only change a small percentage of the total amount of water of their tank. If people only change about 5-10% of the total column, then even if the ALK is at 10-13, it doesn't make that much of a different at all. I am curious as why it is so important to add acid into it to lower the ALK to 8 or 9?

Of course, if you are going to change like 50% or so, then it will be a big deal.


I change 16-20 gal every 2 weeks in a 75 gal display with 20 gal sump.
 
Adding calcium chloride doesn't lower alkalinity?
No, not in any measurable degree, as long as the dose is reasonable. If you dose enough to cause a precipitation event (a snowstorm), that's be a bit different. That takes a large overdose, though.
 
I agree adding calcium chloride does not drop alkainity unless it causes preciptation of calcium carbonate at higher levels of alk and calcium.

Most tanks will need more alk than slat mixes even those with higher alk provide. Small frequent water changes(FWIW, I do 1% per day) coupled with alk and calcium dosing tuned to consumption and accunting for the salt additions can provide a steady alk level in the 7's or 8's if that's the goal .
 
I'm glad I wasn't disappointed by trying it then. I read in a couple of threads that adding it would lower alkalinity. Note to self... take information from the internet with a grain of salt.
 
So the verdict if I read correctly...

Instead of buying red sea coral pro at 80 a bucket, use the 35 dollar instant ocean, while mixing in vat, use.muriatic acid to lower alk, and then two part calcium to raise? Any particular order?

Also knowing.my tank has been a steady 10.5 alk, should I leave 11 alk of of instant ocean, and just raise the calcium?

Mind you, I only have some sps frags at the moment, and havny had to dose anything at all yet...
 
The problem is even 11 isn't consistent for the ALK numbers. My current batch of regular Instant Ocean ALK is testing at 14. I don't want to have to go through extra work to lower ALk. IMO it's easier to be able to dose and bring it up to levels I want rather than using something to try and lower it.
 
Also knowing.my tank has been a steady 10.5 alk, should I leave 11 alk of of instant ocean, and just raise the calcium?

What calcium are you getting with the IO? May not need to raise it.
 
I recently stopped by reef life aquarium on sample road. He had boxes of Seachem salts as well as a large bucket which read guaranteed analysis. I called Seachem and was informed that although their regular salts go through some testing they do not guarantee any analysis. However they do in fact guarantee the stated analysis on the more expensive brand. I will be filling and mixing my 50 gallon container within the next couple of days and will report accordingly

link
http://www.aquavitro.com/products/salinity.html
 
Also knowing.my tank has been a steady 10.5 alk, should I leave 11 alk of of instant ocean, and just raise the calcium?

What calcium are you getting with the IO? May not need to raise it.

Haven't opened the buckets and checked yet. Of course I would prior to using it, but I thought it was a given it would be 360 .

When checking calcium with salifert, when I get to the end of drops needed, it will flash pink, change back to blue. Do you read where it first flashes, or where it stays consistent pink?
 
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