high magnesium in oceanpure pro

[calkrog]

i usually never test my water that i make up for water changes, i have been assuming that the levels are where they should be. silly me.

lately i have noticed my magnesium climbing higher and higher and today i tested it at 2000 ppm. now i know that oceanpure has high magnesium, usually around 1600 ppm, but that would not explain my high magnesium.

I have also had problems maintaining my alkalinity lately, so i finally checked the ocean pure. 2300 ppm magnesium. 6 dKH. pH 8.3. 350 ppm calcium.

so i went to golds and got a bag of reefcrystal since i used to use it about 6 months ago. 1400 ppm magnesium, 400 ppm Ca and 10 dKH. pH 8.3. thats more like it.

anyone else experience this with oceanpure?

[untamed]

Yes...I had batches of Ocean Pure Pro that read like that. As annoying as it is, I measure the Ca/Alk of every batch I mix now.

[kwirky]

I often test around 1500 ppm on a new batch of oceanpure pro. My next bucket of salt won't be oceanpure pro though because of it's insane ammount of magnesium. I'd rather have something on the low side and dose it to my desired levels. It's easier to add calc/alk/mag than to remove it.

[sphelps]

When you test make up water you can't just take a reading from a portion of salt from a bag, you need to mix the entire bag to get an accurate measurement. Otherwise you're going to get different results every time.

The pro is high in magnesium, if you find this level climbing you could simply switch to the regular.

Also Ocean Pure salt is low in ALK, I believe it contains higher than normal Boron levels which also in turn produces inaccurate results on the high end for test kits. Meaning with ocean pure salt you need to maintain higher than normal alkalinity to achieve normal alkalinity levels. Make sense?? I'm not 100% on this but do remember reading this a few places.

Not to add to it, but OP is also low in iodine which is bad for inverts, many users will find their crabs and shrimp parish more than normal.

I used this salt at one point but have since switched to TMP and much happier.

[michika]

Tagging along.

[calkrog]

it just seems much easier to use IO Reef Crystals at this point. i dont have to mix the whole bag, the levels are where I like to see them, and i dont have to worry about boron messing with my test kit.

sphelps.. im not sure what you mean i have to maintain even higher ALK with the oceanpure. my elos dKH test kits reads 6 dKH with the ocean pure. i would like it to be around 9. so what you are saying is that it has to read like 11 to be 9?? Im very confused now.

like i said. seems much easier with the IO RC. tests perfect. even in little batches which works better for me as i dont have room for a 50 gallon drum of premixed water.

[mark]

calkog, IO might not be the ideal either. From old pail for CA/Mg/Alk(dKH) was getting 325/1100/11, new pail I started 300/900/11.

[Matt]

Geeze, Louise.... how freaking hard is it to manufacture a consistent product? It isn't like they can't use measuring cups, is it? I understand that a dry mix can settle and separate -- it's why, in part, I applaud OPP shipping their "buckets" in smaller sealed plastic bags inside the pail. But every salt mix I've ever tried has had anomolous tests: Red Sea, IO, IO RC, Kent, and now OPP. To be fair, I'm just finishing up my last bucket of IORC, and haven't gotten into my OPP yet, but I guess I'll have to test/adjust it, too.

I think I'd pay extra for a salt that was mixed to solution and then re-dried. It should be uniform, right? There's that one that is a gel, too (Fritz?), but I don't know anyone who uses it.

Maybe I'm too fickle, but I'd rather have a mix-it-and-forget-it salt, instead of something that requires six different tests and additives before I can do a freaking water change! I might as well start with the raw ingredients and make my own.

Sorry for the hijack rant. Anyone want to buy a couple of buckets of OPP?

[untamed]

Rant is justified....and I'll add to it. Why can't the salt manufacturers even tell us what is actually IN their salt? TMPR goes as far as to list a bunch of elements, but doesn't say in what concentration any of them are.

Boron in OPP? That's the first I've heard of that. It certainly doesn't say so on the packaging.

None even state what they expect the Ca/Alk levels should be when properly mixed to specific SpG with RO/DI water. If they can't even get the Ca/Alk levels correct, how am I supposed to believe that the trace elements are even close?

[Jason McK]

Have you ever tested TMP to phosphates. That'll scare you