I often see sps newbs ask why their brand new acro frag is RTNing shortly after receiving the frag, and I often attribute it to a poor acclimation technique. I often read about people using a drip acclimation method on their new corals, this can be bad for the coral because the drip acclimation method introduces water to the acclimating species so slowly there is a great potential for temperature differences between the acclimating coral and the display. IMHO temp swings are the most detrimental to any coral and should be avoided at all costs. Over the years I have almost perfected my coral acclimation technique, and using this technique I have not lost a coral shortly after acclimation yet (excuse me while I knock on wood). Today I received an order from two different vendors and I felt it a perfect opportunity for me to record and share my acclimation technique with the world, and make a contribution to the r2r community at the same time.
Before you get started gather all of your supplies, what I use is
tupperware containers
small plastic cups with holes punched in the bottom
glass measuring cup
alk test kit
refractometer
testing strips
magnifying glass
scissors
various coral dips
(not pictured)
extra frag plugs
super glue gel
bone cutters
butter knife
acclimating supplies
When receiving my coral frags I make an assumption that each frag from the vendor or hobbyist comes from the same water supply, this I believe to be a fairly safe assumption. After giving myself access to each frag, I carefully cut the tops of the bag open and poor the shipping water into a tupperware container. I then place the frag plug into one of the small plastic cups and then place that into the tupperware container. This allows me to put more than one frag in the tupperware container at a time and I don't have to worry about them bumping and damaging eachother. Some of the frag plugs don't have a stem on the bottom, when this happens carefully arrange the frags in the cups so the ones outside of the cups will not touch eachother. Also, only put frags from the same source in the same tupperware container. What I like about one of the vendors my order came from today is that they ship their coral already mounted inside of plastic cups. See the pics below.
acclimating sps frags from vendor 1
acclimating sps frags from vendor 2, note the positioning of the two frags that did not have stems on the plugs.
After getting the corals positioned in there respective tupperware containers, I like to test the water of the shipped corals. Specifically I test the SG, alk, and nitrates of the shipping water. This gives me a good idea of how big of a difference the transition will be, and gives me insight on what the person sending me corals does to have awesome corals to send in the first place. The nitrates of both shipping waters was 0, the SG's was 34 ppt, the alks were 7.3 and 9.5. I keep my alk at 8.1, SG at 34 ppt, and my nitrates are currently 10 ppm (started dosing vodka to get them down).
After running the tests, I place the tupperware containers in my tank in a spot where they will not blow around and tumble with the lights off. I use the glass bracing to hold my containers in place. See the pic below
floating containers
After all containers are in the tank, I set a timer for 30 minutes for them to reach a temperature equilibrium. I chose 30 minutes because tupperware containers are designed to be somewhat insulated and can take a little longer to start letting heat in or out than a plastic bag. Below is a screenshot of my timer going just for completeness.
Before you get started gather all of your supplies, what I use is
tupperware containers
small plastic cups with holes punched in the bottom
glass measuring cup
alk test kit
refractometer
testing strips
magnifying glass
scissors
various coral dips
(not pictured)
extra frag plugs
super glue gel
bone cutters
butter knife
acclimating supplies
When receiving my coral frags I make an assumption that each frag from the vendor or hobbyist comes from the same water supply, this I believe to be a fairly safe assumption. After giving myself access to each frag, I carefully cut the tops of the bag open and poor the shipping water into a tupperware container. I then place the frag plug into one of the small plastic cups and then place that into the tupperware container. This allows me to put more than one frag in the tupperware container at a time and I don't have to worry about them bumping and damaging eachother. Some of the frag plugs don't have a stem on the bottom, when this happens carefully arrange the frags in the cups so the ones outside of the cups will not touch eachother. Also, only put frags from the same source in the same tupperware container. What I like about one of the vendors my order came from today is that they ship their coral already mounted inside of plastic cups. See the pics below.
acclimating sps frags from vendor 1
acclimating sps frags from vendor 2, note the positioning of the two frags that did not have stems on the plugs.
After getting the corals positioned in there respective tupperware containers, I like to test the water of the shipped corals. Specifically I test the SG, alk, and nitrates of the shipping water. This gives me a good idea of how big of a difference the transition will be, and gives me insight on what the person sending me corals does to have awesome corals to send in the first place. The nitrates of both shipping waters was 0, the SG's was 34 ppt, the alks were 7.3 and 9.5. I keep my alk at 8.1, SG at 34 ppt, and my nitrates are currently 10 ppm (started dosing vodka to get them down).
After running the tests, I place the tupperware containers in my tank in a spot where they will not blow around and tumble with the lights off. I use the glass bracing to hold my containers in place. See the pic below
floating containers
After all containers are in the tank, I set a timer for 30 minutes for them to reach a temperature equilibrium. I chose 30 minutes because tupperware containers are designed to be somewhat insulated and can take a little longer to start letting heat in or out than a plastic bag. Below is a screenshot of my timer going just for completeness.



