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Old 09/11/2020, 06:05 PM   #1
CBafia
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Does adding pure RODI water (0 ppm) dilute Ca, alk, and Mg?

As the title states, will adding clean rodi water dilute my parameters? I know salinity will go down obviously but what about my other parameters?

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Old 09/11/2020, 07:45 PM   #2
Sk8r
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It contains nothing but h's and o's. H20 with abso-tively nothing else in it, so yes. However, if you need to maintain calcium for shelled creatures or stony coral, set your basic parameters to match mine in my sig line, then add 2 tsp calcium per gallon of ro/di waiting in your ro/di topoff reservoir: Mg depletes very slowly, and your buffer will hold out if not challenged by a fall in MG past the 1200 mark. It's 'magic' but it works, being basic ocean chemistry. Seawater dissolves old coral skeleton and old limestone (same thing) to keep the calcium up, and CAN dissolve it readily given a buffering (DKH) at 8.3 and a magnesium level (the seabed contains LOTS of mg....at 1200 plus. I like `1350 as a mg reading that will hold a long time. If youget to where you are tossing in expensive tablespoons of calcium, switch to Mrs Wages' Pickling Lime, (calcium) from the grocery store, and just keep your alk and mg up. Far, far cheaper. And you can't mismeasure it: only 2 tsp of it per gallon CAN dissolve in rodi water.


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Salinity 1.024-6; alkalinity 8.3-9.3 on KH scale; calcium 420; magnesium 1300, temp 78-80, nitrate .2. Ammonia 0. No filters: lps tank. Alk and cal won't rise if mg is low.

Current Tank Info: 105g AquaVim wedge, chromis, royal gramma basslet, tailspot blenny, ocellaris clown, yellow watchman, chestnut turbo snails, bristleworms, couple of hermits.
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Old 09/12/2020, 12:07 AM   #3
joseserrano
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Yes it will. Test your tank. If you are dosing, you should be familiar with testing


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Old 09/24/2020, 10:46 AM   #4
dav2245
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What would happen if you over dos cal and mag? Would you water get cloudy?

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Old 10/01/2020, 08:45 AM   #5
gavij012379
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Quote:
Originally Posted by dav2245 View Post
What would happen if you over dos cal and mag? Would you water get cloudy?

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If you overdose it high enough, you will have marine snow and it will precipitate out of the solution.


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Old 10/01/2020, 08:56 AM   #6
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If you overdose it high enough, you will have marine snow and it will precipitate out of the solution.
Wow thanks for the info.

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