doing a 50% water change on the qt tank. my question is will all the frags be OK out of water when i drain and fill.not moved just drain the tank and fill it with frags in there place.or should i move frags to bottom?i can drain and fill in 10 mins max only 20g qt
50% water change
- Thread starter senji
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Raamiah
Well-known member
From what I've heard coral are ok out of water for a few hours. Now I'm not saying you should do that but 10 minutes shouldn't be an issue.
Krish
RF STAFF
I can tell you, I've seen reefs come out of the water here at low tide sometimes for a few hours so I guess depending on the coral, they should be fine. Just assuming though. I know stuff like zoanthids aren't affected. I use to collect them in tidepools which everyday, they were exposed to hours of no water when tide was low 
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The corals being exposed to air, out of water, will be just fine. However, since you're doing a water change of such a high percentage, it'll be important to make sure that the temperature of the new water is close to the temperature of the tank water.
Should be good to go! I forgot to mention matching the pH, but your pumps, circulating the water, will stabilize the pH.
I think people are way to fussy about matching temp, etc. for water changes.
Krish can correct me if I am wrong, but I assume it sometimes rains while the tide is out.
Those corals out of water when the tide is out would be exposed to cold, fresh rainwater.
I don't remember reading about coral die-offs after rain.
Sure the corals will retract tentacles, but they come back out later.
Krish can correct me if I am wrong, but I assume it sometimes rains while the tide is out.
Those corals out of water when the tide is out would be exposed to cold, fresh rainwater.
I don't remember reading about coral die-offs after rain.
Sure the corals will retract tentacles, but they come back out later.
Krish
RF STAFF
Definitely. This is why you usually shouldn't collect water close to the shoreline. If it rained, then you end up with water inconsistent to what you collect a ways off of shore. I've definitely seen some down pours that could turn tidepools into basically freshwater, but the only thing that may play a major factor here is wild species use to this kind of stuff vs a coral or even fish that are tank raised and bred that is always use to consistent water quality and temp. I guess no matter what, nature will probably find a way, but wild specimens IMO I would imagine are more hardy or could take a bit more abuse in a sense.
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Krish
RF STAFF
Lol! You never know. Not sure if many hobbyist will try it with their expensive corals lol
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1guydude
Well-known member
corals adapt but i dont think u could "toughen" em up enough to be in cold water with no movement for an extended period! I wonder if theres much research on melting corals and how long and such hmmm.... NO not worth it lol...
tat2z_21
tat2z_21
Thats it I am starting CORAL BOOTCAMP. I need all of you to send all of your prized corals to my house so that they can endure a steady dose of punishment. Or you could just send them to my house for the hell of it.
Krish
RF STAFF
I'll see if I can get permission from our government to send you a reef one time.
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Corals are tough and can handle temp swings and salinity variations real well.
The problem with doing BIG WC's often or not matching your parameters the best you can is that these stresses will take a toll on your corals. Your SPS corals for instance; Your Pearlberry wont be pearl, your red planet wont be red, your purple plasma wont be purple....... They will all be brown, just like most corals are in the wild.
The problem with doing BIG WC's often or not matching your parameters the best you can is that these stresses will take a toll on your corals. Your SPS corals for instance; Your Pearlberry wont be pearl, your red planet wont be red, your purple plasma wont be purple....... They will all be brown, just like most corals are in the wild.
tat2z_21
tat2z_21
I would suggest my method of a large water change, I do a transfusion sort of water change. I mix up and prepare a larger amount of water (for me it is 2x55 gallon drums) and I drain from one side and pump into the other side. I believe that the answer to pollution is dilution.
