[Dive_Master]

I read that Pachyclavularia violacea (green star polyps) is possibly adversely affected by the Lugol's solution of Iodine.

I am using TECH-I, which is potasium Iodide, the same ingredient as in Lugol's solution. I add about 2-3 teaspoons/week/75 gallons.

All other soft corals love it and grow without stopping.

Can the TECH-I be the reason why my star polyps stopped expanding for the last three days?

I've had this colony for about 4 months and everything was ok unil about a week ago.

Anyone experienced the same problem?

Please help. I am thinking of doing 25 % water cahnge and stop using TECH-I.

What do I use instead?

Thanks

[acropora]

Generally speaking G S P grow like weeds and do often close up for a few days. However since you just started dosing iodine, you should check your iodine level and see if it is at a correct leveel.Is Tech 1 in a time released form? A water change is a good idea and go slow with any future additions.