- Location
- Staten Island ny
I have carbon in my reactor but how often should I swap it out?

Holy crap nowhere near that many Jesus that's reef herpes
you're very responsible reefer :hug:
very useful tactic , thank you very much , I will def be having fwe on hand all the time .This is a post I wrote back in 2008 here on MR regarding the treatment of FW's (hope it helps):
I siphoned out every visible flatworm for three consecutive days. This step is extremely important.
I removed my carbon. Replaced it with fresh carbon to prepare for the post FW treatment.
Then I dumped three full bottles of FWE into the tank. The flatworms began dying and blowing all over the tank within 15 seconds. I continued to siphon them out. I used a powerhead to get to those hard to reach places. I siphoned them out for at least a half hour. I used a new pantyhose on the end of the siphon tube to catch the dead FW's, and not have to replace 40-50 gallons of water from a 100 g system.
I then siphoned out about 25g of water. Replaced it with freshly mixed (the day before) saltwater, turned on my carbon and prayed. Every single coral closed up like a clams a$$. I thought for sure I killed everything.
Within the next 24-36 hrs, every coral opened. I lost no coral, no fish. I did lose one feather duster.
On the third day I repeated the same process. I dumped three full bottles of FWE into the tank. I once again had my carbon off line and refreshed. Not one single FW could be seen blowing around.
I put the carbon back on, nothing even closed up.
One week later, I repeated the exact same procedure and treated with three full bottles of FWE and my powerhead blowing into all crevices. Again, not a single FW was to be found. Did another 25% water change. New carbon. I've been FW free for nine years.
I went through this detail to explain why now I treat EVERY SINGLE ADDITION to my tank with FWE. I temperature acclimate every coral with a minimum of three drops of FWE into every single bag with coral. I slosh it around in the bag and let it sit for the temperature acclimation period of about 20 minutes. Then into the tank.
I've never seen another FW in any system I run.
FWE should be in EVERY REEFERS possession.
Great post!. This is what I'm talking about. Responsibility!
Seriously I wouldn't even worry about them. Do a FW exit treatment and read the instructions to a T and they will be gone by the weekend![]()
Are red planaria FW even bad? For those who had them, what kind of damage do they cause? IME, no damage
