Salinity at 40

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you can definitely lower salinity faster than raising it. ( this is as far as shock or visible stress goes)
It’s the other parameter drops that are problematic…Fish are more tolerant than corals as far as Alkalinity et goes.
I’d Get that reading also
Sorry for the vague answer, few might risk their reps over a potentially wrong direct answer, but here is one anyway….
You can do the math but I’d swap out about 1/2 gal day with RO till you get your levels right. If someone chimes in with a slower suggestion, go with theirs, won’t hurt my feelings lol
I’d watch my alkalinity and perhaps lower that a lil slower carefully adjusting along the way… I have had bad thing happen with fast alkalinity changes, IMO there’s the rub
I’ve screwed up and had 40ppm before, nothing died
 
Last edited:
Doctorgori said:
you can definitely lower salinity faster than raising it. ( this is as far as shock or visible stress goes)
It’s the other parameter drops that are problematic…Fish are more tolerant than corals as far as Alkalinity et goes.
I’d Get that reading also
Sorry for the vague answer, few might risk their reps over a potentially wrong direct answer, but here is one anyway….
You can do the math but I’d swap out about 1/2 gal day with RO till you get your levels right. If someone chimes in with a slower suggestion, go with theirs, won’t hurt my feelings lol
I’d watch my alkalinity and perhaps lower that a lil slower carefully adjusting along the way… I have had bad thing happen with fast alkalinity changes, IMO there’s the rub
I’ve screwed up and had 40ppm before, nothing died
Click to expand...
Only thing that looks unhappy is a sinularia. Everything else looks fine.
2 litres a day should do it. One in morning one at night.
Am dosing seachem marine Buffer. Alk should be fine
But will check
 
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PeterEde said:
Just discovered my salinity ar 40ppm
How fast can I drop it.
30 gal tank at 40
Click to expand...
How have you managed to do that? Is it by adding the sea chem buffer stuff? If it is, I would consider alternative methods to be honest. How have you calibrated your method of salinity measurement?

Edit - looks like seachem advocate a 1 meq/L increase in Alk with each dose, that seems a lot to me in one go. Your Alkalinity reading will be interesting, I’m guessing it’s sky high.
 
^^^ actually probably the 1st thing to do is check your calibration, sorry not to suggest that and @Garf , good spot on suggestion
edit add: just re-emphasis on the alkalinity check in tandem
 
Garf said:
How have you managed to do that? Is it by adding the sea chem buffer stuff? If it is, I would consider alternative methods to be honest. How have you calibrated your method of salinity measurement?

Edit - looks like seachem advocate a 1 meq/L increase in Alk with each dose, that seems a lot to me in one go. Your Alkalinity reading will be interesting, I’m guessing it’s sky high.
Click to expand...
No I have been topping up skimmer loss with salt water and not taken into account evaporation. Should have been topping up 50/50 salt and fresh.
My fault
My alk is 8.2 last check a few days ago
 
Randy Holmes-Farley said:
How are you measuring salinity?
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1645654045290.png
 
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Garf said:
How have you managed to do that? Is it by adding the sea chem buffer stuff? If it is, I would consider alternative methods to be honest. How have you calibrated your method of salinity measurement?

Edit - looks like seachem advocate a 1 meq/L increase in Alk with each dose, that seems a lot to me in one go. Your Alkalinity reading will be interesting, I’m guessing it’s sky high.
Click to expand...
I mixed a liter of marine buffer and does 15ml per day. I do not add a full does in one hit
 
Deltec
Slowly is best, You can bail a quart , add a quart of RODI water every few hours BUT before doing any of this- Take a water sample to a trusted LFS and have them check your salinity.
Refractometers require calibration periodically and should be done periodically. Assure you are NOT getting a false reading again Before adjustments.
Anytime you have to add water, it will be RODI water addition followed by a verification with salt tester
 
vetteguy53081 said:
Slowly is best, You can bail a quart , add a quart of RODI water every few hours BUT before doing any of this- Take a water sample to a trusted LFS and have them check your salinity.
Refractometers require calibration periodically and should be done periodically. Assure you are NOT getting a false reading again Before adjustments.
Anytime you have to add water, it will be RODI water addition followed by a verification with salt tester
Click to expand...
Normally my replacement water was RODI but I recently installed a Mantis skimmer and it's still bedding in but I have removed discoloured water and replaced with salt. I did not account for evaporation as well. There in lays my problem I think. No evaporation has been accounted for since the new skimmer went in a week ago. Just skimate at near a liter a time
 
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PeterEde said:
Normally my replacement water was RODI but I recently installed a Mantis skimmer and it's still bedding in but I have removed discoloured water and replaced with salt. I did not account for evaporation as well. There in lays my problem I think. No evaporation has been accounted for since the new skimmer went in a week ago. Just skimate at near a liter a time
Click to expand...
More than likely- Yes
 

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