Quick update on my current tank 120.
Last month I was having some serious problems with what I'm guessing was cyano. It was pretty much all over the tank and had bubbles as well. On August 3rd it was suggested by
@Diesel that I keep a tank log book and start tracking my ALK daily and NO3 every other day. Along with that I did some H2O2 dosing and 5g water changes every other day for about 2 weeks, combined with blowing/scrubbing off the rocks daily. I'd also like to note that I was previously using kalk water in my ATO but switched to 2 part. Here is a little look into some of the highlights in that journal:
8/3:
-10g water change
-Blew off rocks
-First time using red sea blue bucket salt
-Switched back to exclusively frozen foods + a tiny scoop reef roids (only feeding once per day at night)
8/4:
-Dosed 12ML H2O2 (10am/9pm)
-ALK: 8.8
-Test fresh batch of red sea salt, 8.3 (right on target with what the bucket says)
8/5:
-Dosed 12ML H2O2 (11am/8pm)
-5g water change 11am
-ALK: 8.8
-NO3: 16ppm High Range Red Sea test kit
8/8:
-Dosed 12ML H2O2 (7am/6pm)
-Dosed 2ML Reef Energy (Part A) - First time using* ****From this point on I dosed 2ml A and B on separate days; e.g. 8/9 dosed Part B, 8/10 dosed Part A.. etc.)
-ALK: 8.8
-NO3: 8ppm
8/11:
-Dosed 12ML H2O2 (7am/9pm)
-5g water change
-2ML Reef Energy (Part B)
-ALK: 8.8 -Adjusted a drain value causing more ATO water to get put in
-NO3: 4ppm High Range test
Saving some redundancy typing here:
8/12:
-ALK: 8.7
-Refilled ATO but did not clean bottom of ATO
8/13:
-ALK: 8.5
-Installed a fan under the sump for cooling*
8/14:
-ALK: 8.0 - Big drop, manually dosed 12ML Alk 2 part
8/16:
-ALK: 7.7 - Manual dose 5ML 2 part 7am and 20ML 9pm
-5g water change
8/18:
-ALK: 7.7
-5g water change
-Set up doser (15ml alk and 12ml cal)*
8/21:
-ALK: 7.4 (New hanna reagent)
8/22: This date is to note that this was my last water change to date and stopped H2O2 dosing.***
8/24:
-ALK: 7.1 (tested twice)
-Manually added more ALK
-Increased dosing to 20ml Alk and 15ml Cal
8/26:
-ALK: 7.1
-Manually added more ALK
-Increased ALK dosing to 25ml**
8/27: Date important since my ALK has not moved more than 1 point up or down from this date
-ALK: 7.3
9/3:
-ALK: 7.4
-NO3: 0ppm
-PO4: 5ppb = .015ppm
I know this is long to read through but I think there is something to be learned here. In a month I went from having problems and killing SPS, to having only a few spots of cyano still and my SPS (test frags) are still alive. Not to mention I am actually seeing growth that I highlighted in this thread earlier. It is hard to say what is really the cause and effect of the success. Was it the small water changes combined with cleaning off the rock? Was it the H2O2 dosing? Was is a result of feeding less and switching from pellets/flakes to exclusively frozen? Are the corals doing better because lower nutrients or because I'm actually feeding them now?
It's extremely difficult to pin point. However, I think these are all pretty minor changes and didn't really take much time to implement. I don't think I've been this in tune with my tank as I am right now.
Ahh... one major thing I forgot to mention. I've done a few recent doses of bacteria. Specifically prodibo biodigest and microbacter7. This is something I plan to continue to do. Did they cause my nutrients to go down? Who knows.
Anyways I hope I didn't waste my time typing this up and hope someone came away with something positive they can apply to their tank. I'm not entirely happen with 0 nitrates but I think at this point I can increase feeding slightly but I'm in no rush.