RichardinMa
New member
By this evening the peppermint shrimp was back to normal. The amphipods had a good amount of die off but the mysids seemed to have bounced back too. The emerald crabs were all graveyard dead. More importantly, the biggest Monti started to show some PE this afternoon. The smaller one is a blue polyp brown that never did show much PE to begin with so it is hard to tell. There are two things that I am thinking caused the problems. First, the amount of surface area on a Montipora is much greater than an Acropora frag or even small colony. One of the pieces I dipped measures about 7" x 5", the other was a small one, about 4" x 4". This greater surface area can potentially carry a lot more chemical back into the tank, especially in the porous areas of exposed skelton. There are areas there that looked like sponge.
The second issue I am suspecting is the tremendous amount of slime these guys produce, again potentially soaking up the chemical carrying it back to the tank. There was one tiny nudi that was obviously trying to get off one of the montis after it was placed back in the tank so I think they were still carrying some nasty stuff on them. There is no rock or other material attached to these guys- just the coral itself.
I do plan to keep dipping but I will be making a couple changes. I am dropping the concentration and will watch to see if it is still toxic to the nudis. I will also be doing a double rinse with good flow to help minimize the amount of chemical brought back to the tank. Hopefully this will give me the benefits of killing the MENs while minimizing the collateral damage. I am curious about the sizes of the DTs that other people have had no problems in. What is the gallon capacity of your system compared to the number/size of the dipped pieces?
The second issue I am suspecting is the tremendous amount of slime these guys produce, again potentially soaking up the chemical carrying it back to the tank. There was one tiny nudi that was obviously trying to get off one of the montis after it was placed back in the tank so I think they were still carrying some nasty stuff on them. There is no rock or other material attached to these guys- just the coral itself.
I do plan to keep dipping but I will be making a couple changes. I am dropping the concentration and will watch to see if it is still toxic to the nudis. I will also be doing a double rinse with good flow to help minimize the amount of chemical brought back to the tank. Hopefully this will give me the benefits of killing the MENs while minimizing the collateral damage. I am curious about the sizes of the DTs that other people have had no problems in. What is the gallon capacity of your system compared to the number/size of the dipped pieces?