Which strategy to use to bounce back?

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SallyWho

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I will freely and shamefully admit that I slacked off and let my tank go. I'd like to whip it back into shape, and the answer to a few of my problems is obviously water changes. Which do you think would be most beneficial? Several small changes a week for a several weeks, or 2-3 larger changes a week to really get that old water swapped out? The tank is 120g with a 40b sump. I have a pipe thingy that I use to siphon water out and I can either siphon out 20g or 10g at a time. I haven't done any testing yet, but I can look around at the cyano, the pathetic unhappy SPS, and the proliferation of pests (probably because I overfeed to keep an aggression issue under control) to know that my water is diiiiiiiirrrrrrty. I don't want to shock the tank by too much turnover, but I don't want to wait until Christmas for the cyano to go away either. What would you do?
 
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Fish Think Pink

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I will freely and shamefully admit that I slacked off and let my tank go. I'd like to whip it back into shape, and the answer to a few of my problems is obviously water changes. Which do you think would be most beneficial? Several small changes a week for a several weeks, or 2-3 larger changes a week to really get that old water swapped out? The tank is 120g with a 40b sump. I have a pipe thingy that I use to siphon water out and I can either siphon out 20g or 10g at a time. I haven't done any testing yet, but I can look around at the cyano, the pathetic unhappy SPS, and the proliferation of pests (probably because I overfeed to keep an aggression issue under control) to know that my water is diiiiiiiirrrrrrty. I don't want to shock the tank by too much turnover, but I don't want to wait until Christmas for the cyano to go away either. What would you do?

First, I would test my water parameters to have a baseline (LFSs will test if you can't do all, but might have to call around and might have to pay a little $ for some tests)

Then do water change 10-20%

Then test again (see above).

Then determine what needs work/dosed/whatever... refer to below chart. DO NOT GO FAST - adjusting water should happen over time or that can also harm/kill corals.... It didn't get out of control overnight, and don't try to fix it overnight.

"start where you are, use what you have, do what you can." - Arthur Ashe, tennis player
 

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brandon429

why did you put a reef in that
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lets do one of these on it:



it takes one day to turn it around, not a series of days.
 
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After doing a water change yesterday (~20g on a ~150g system), I did some testing today.

SG 1.026
Amm 0
Nitrites 0.05
Nitrates 20
Phos 0.41
Alk 7.0

Granted, I'm interpreting these results with caution- many of my reagents are expired. But if these are correct, then I think continued water changes will help. The water changes will get rid of those nitrites and bring down the nitrates and phos, and the fresh saltwater will replenish the Alk a bit.
 
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