Help SPS corals dying slowly

[Staisman]

I had a issue with it causing stn when i ran it. Now i don't run it in a canister anymore i just run it in a mesh filter bag. And i also run a half to a 1/4 what brs recommends. Did you start having a issue after you recently changed the carbon?

No, I run BRS Rox for 2 years now and had no issues. Nothing changed there.

 

[Wu Tang Clams]

It is because of the WC, I am using RED SEA PRo salt and it has high value of the Alk in it. Usually I am at 8.4.

There's your issue dude,you've swung from 8.4 to 9.8 and your sps are not happy

 

[Puffyluv]

Mmm, I dunno. 1.4 raise in kH shouldn't cause that...and either way he was having issues before. Another vote for stripping your water...0 nitrates isn't good when your phosphates are .04...but then, TRUE zero nitrates aren't really good anyway. You just want very very low levels of both.

Sent from my SM-G900P using Tapatalk

 

[anthonys51]

Help SPS corals dying slowly

There's your issue dude,you've swung from 8.4 to 9.8 and your sps are not happy

How many gallons do you normally change at once and how many gallons is your tank
( I know you say 75 gallon and 55 sump but is sump half full )


If your going to use a salt with a


Sent from my iPhone using Tapatalk

 

[Staisman]

How many gallons do you normally change at once and how many gallons is your tank
( I know you say 75 gallon and 55 sump but is sump half full )


If your going to use a salt with a


Sent from my iPhone using Tapatalk

I estimate no more than 90-100 gal. I usually change 20 gal once a month. The problem started not after the WC. I was using RED SEA Pro salt from a beginning and had no issues.

 

[anthonys51]

Honestly I wouldn't do 20 percent water changes once a month. It's better more stable to do 10 2 times a month. Now the water change alone probably isn't the cause. But changing that much water can drastically change your water chemistry. And just because you did it for a while doesn't make it a good idea.


Sent from my iPhone using Tapatalk

 

[Staisman]

Honestly I wouldn't do 20 percent water changes once a month. It's better more stable to do 10 2 times a month. Now the water change alone probably isn't the cause. But changing that much water can drastically change your water chemistry. And just because you did it for a while doesn't make it a good idea.


Sent from my iPhone using Tapatalk

Ok thanks, I will consider making less and more frequent.

 

[Staisman]

Also I noticed that my Coralline algae stopped growing and started to die off.

 

[bertoni]

Coralline should be fairly robust. Nutrient limitation could be the issue here. I agree that smaller, more frequent water changes might be safer, but coralline isn't that touchy in that respect.

 

[Staisman]

I stopped my skimmer and dosing NoPox but my NO3 is still at 0.0.
Should I dose KNO3 maybe?

I feed my fish 2 times a day, I can also put auto feeder with some dry foods for more food per day.

 

[bertoni]

You could consider adding a bit more fish food or dosing nitrate. I'd probably try the fish food first, because it tends to be easy and can help with fish coloration, but either is reasonable to try.

 

[anthonys51]

I stopped my skimmer and dosing NoPox but my NO3 is still at 0.0.

Should I dose KNO3 maybe?



I feed my fish 2 times a day, I can also put auto feeder with some dry foods for more food per day.

Might take a few days to week to start seeing nitrates after stopping both of them


Sent from my iPhone using Tapatalk

 

[Staisman]

So after a week of heavy feeding my Nitrates are still 0.0 but my Phosphates skyrocket from 0.04 to 0.16

 

[anthonys51]

Nitrates won't raise as fast as phosphates. Some foods. Especially flake food is loaded with phosphates


Sent from my iPhone using Tapatalk

 

[bertoni]

You could consider dosing some form of nitrate. I would try food-grade sodium nitrate.

 

[victorcan]

I estimate no more than 90-100 gal. I usually change 20 gal once a month. The problem started not after the WC. I was using RED SEA Pro salt from a beginning and had no issues.

Im by no means more qualified than most of the uber reefers on this forum but swinging your Alk that much is EXTREMELY stressful to SPS.. If you had a 200-300 gallon tank it wouldn't be so much of a swing but in a smaller system like yours the Red Sea is going to fry your sps...Use Fritz RPM for your salt Ive been doing WC for the past couple weeks and my corals seem to be very happy.. I keep my all around 8.25 and the Fritz salt on 2 separate batches Ive prepared at 1.026 have read 8.3 DKH on both batches. As far as why this hasn't happened previously don't know for sure but Alk swings are deadly to SPS in my experience..Good luck bro

 

[bertoni]

I'm not clear on why the Red Sea salt is going to be an issue, but I haven't used it before. How much of an alkalinity shift does the tank have when the water change is done? We could calculate that give the alkalinity level in the salt and the tank, and the total water volume of the system.

 

[Staisman]

I never had problems with salt before. I always do 20 gal and my total volume is ~100 gal. The Red Sea salt has 13 dkh of Alk at sg 1.026. My tank usually at around 8.4 I never tested Alk right after the WC because I never had problems.

 

[bertoni]

The water change should cause about 1 dKH change, which should be fine.

 

[victorcan]

The max suggested dkh increase over a 20 hour period shoulnt exceed 1.4, and upon a single water change but doing multiple back to back wc that number can mess u up..