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Old 12-02-2004, 10:42 PM   #11
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Originally Posted by Phyl
Do you think I should just stop watching these numbers for now or should I keep up with them to prevent any losses to the inverts and LR?
If your doing regular water changes I don't think you'll need the alk/Ca testing but I would keep up the others.

If I understand you correctly, you buy your SW premixed from the LFS? If so, that might be your Ca drain, not the tank. Most likely the LFS also uses IO salts which is quite low in Ca. Water changes are what's lowering the Ca moreso that the tank critters/rock.

That is unless you only change the water weekly and test daily, just a stab in the dark.

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Old 12-02-2004, 11:05 PM   #12
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I did my first (and only) water change on 17th. The 19th was the first day of testing. Tested at 420ppm. Tested Saturday. Down to 400, Sunday 360(?). Dosed with 3tsp of Kent Ca (am), brought it back up to 380 evening. The next day it was back down to 360 so I dosed 6 tsp. That brought be up to 400, but by the next day it was back down again to 360. Dosed 9 tsp over the next day. That brought me back up to 420. Added another 6 and am now up to 450. I am testing the Ca and Alk daily since it was changing so fast.

The original water was also IO so no better/worse than what the LFS is doing for me. I need to find a source of better salt.

Since there are no fish in there yet (filter media's been in the system for 2w now so we're ready to move it to a QT tank) and I'm still trying to finish my cycle (ammo 0, trites 0, trates 20) I'm not doing regular water changes, per se. Will probably do one this weekend though.


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Old 12-02-2004, 11:37 PM   #13
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Truely I think it's a combination of things but not one stand alone issue to be concerned about. I would still think the cycle and possible the saltmix are your main contributors. Some will also be from the rock, abiotic precip and the inverts you mention.

From the 19th your total consumption is about 100 ppm +/- (?) based on your above post so really in 14 days, that's only about 7 ppm total change each day spread out.

Large swings are more likely to be chemical in nature rather than animal use which for the most part, is steady daily decreases.

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