Recovery update
Recovery update
Hello everyone from sunny Copenhagen (finally!)
This is an update on the progress of the "rehabilitation" of our tank:
A few historic facts:
- 10 December 2012: We set up the tank with matured water and moved our stock from the previous Red Sea Max 250L
- January 2013: We start seeing signs of bleeching on a few corals
- February 2013: The problem got greater with more stock being affected.
- March 2013: No improvements and so far we have lost 70% of our stock. Approximately 1.800EUR (2300USD) going down the drain
- March 2013: Started systematic use of Bacteria and Bacteria food, cut alot on the quantity of feeding. Measurement every 5 days of pH, Temperature, Alkalinity, Mg, Ca, PO4, NO2, NO3, Ammonia, Potassium. Weekly 10% water change
- April 2013: After identifying that one of the potential issues could also be the water movement, we changed the heart of the Ocean Motion from 6.000L/hr to 16.500L/hr. Lookining into the lighting of the system we abandon the use of our own program and imported the Radion graph from Jonathan (
http://www.reefcentral.com/forums/showthread.php?t=2124262) and increased the distance of the lamps to the water surface from 15cm to 25cm (6in to 10in)
- May 2013: We upgraded on our previous osmosis system (TDS reading 35) to a higher quality RO/DI device (TDS reading 0). We stopped stirring up the sand after investing some time educating ourselves in the sand bends and the importance of leaving it at peace
Status of today 18.05.2013
The system looks to be more stable. It has been over 4 months that our tank has not beeing doing good (out of the total of 5months of tank life). The added circulation and the dedicated husbandry has paid up to a certain level. Golden advice is that in this hobby good things take time to happen but how much patience can one have?
Some of the corals are doing very well whereas some other corals extremely bad:
- Bubble coral in the old system (Red Sea Max) with a NO3 reading of average 20 was doing great. In this system it is never totaly expanded and we can nearly almost always be able to see the skeleton.
- Even the easy to keep LPS coral are doing very bad. This week only a big hammer coral colony and a euphyllia coral kissed this world goodbye.
- Acropora millepora, acropora humilis, horn coral have been doing bad and eventually bleaching
- Kenya trea soft coral is doing good although we dont see as much growth as in the old tank
- Gorgonea, Pagoda cup, Zoanthids, green eye cup coral, red/blue mushroom is doing excellent
- Scolly bleeding apple is doing ok although it shows signs of "shrinking"
- Clam is doing excellent
Measurements history for the past 1.5 month:
Temperature: 25C (77F)
Nitrates NO3: There was a spike of 25 a month ago but ever since it has been going down and today it was 3
Nitrites NO2: 0
pH: Around 8.00-8.10
Alkalinity: Between 125-130
Salinity: 1.0245
Calcium: Between 400-480
Phosphates: We changed testing kit to a digital Hanna instrument and had readings from 0 - 0.4. Now it seems to have been stabilized at 0.02
Magnesium: Between 1350-1470
Copper: 0
Potassium: 375
Ammonia: < 0.25
I would and could use any piece of a good advice from you - Today for the first time i started flirting with the idea of giving up on the hobby
Thanks alot for taking your time in helping me.
Best wishes from Denmark,
Dino