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  #166  
Old 07-12-2018, 02:24 AM
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Usually if a system runs nutrient poor stabile for a while NO3 is not detectable with the hobby test kits. I have personally never had any issues with this situation.

G.Alexander
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  #167  
Old 07-12-2018, 06:43 AM
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so zero NO3 with hobby test kits is fine. what about PO4 & P? should that be undetectable also? I have Hanna Checker for PO4 & Hanna Checker ULR for P
thanks so much u da man
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  #168  
Old 07-13-2018, 05:11 AM
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I had running my reefs with a PO4 level using a Hanna Photometer in the range of 0.00 – 0.02 mg. The difference in the look of the corals within this range was not visible. Has worked really well for my, health and growth of the corals was fantastic as long as all other parameters (water, light, biology etc.) where perfect.

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  #169  
Old 07-13-2018, 05:33 AM
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Quote:
Originally Posted by JMac View Post
so zero NO3 with hobby test kits is fine. what about PO4 & P? should that be undetectable also? I have Hanna Checker for PO4 & Hanna Checker ULR for P
thanks so much u da man
Np is close to 0ppm coral performance is no problem, my current tank n is not detected, p 0.00~0.01 ppm. This is not why we use the kz system, you say is it?
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  #170  
Old 07-14-2018, 02:24 PM
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Quote:
Originally Posted by G.Alexander View Post
You might decrease the KH a little bit to 7.5 keeping it as stabile as possible.

Have you already checked the K+ level of your salt mix ?

Dosing coloration elements does depend to the coloration of corals so basically if SPS corals tissue has become lighter already showing good growth you can add a couple of those elements additional but lets first bring up the K+ level as this has a impact also.

G.Alexander
how do I lower KH to recommended level of 7.5?
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  #171  
Old 07-14-2018, 03:13 PM
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An idea to use hydrochloric acid (not recommended for danger), change sea salt, wait for the tank to land naturally
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  #172  
Old 07-14-2018, 09:02 PM
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Quote:
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An idea to use hydrochloric acid (not recommended for danger), change sea salt, wait for the tank to land naturally
I use Red Sea Blue Bucket Salt, maybe I will try mixing to SG 1.024 instead of 1.025 to see if that gives me lower KH. I typically mix at 1.025 & KH is always above 8. Batch analysis is 7.756 at 1.026
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  #173  
Old 07-14-2018, 10:26 PM
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SG 1.024 & 1.025 kh is of course different. You adjust kh by SG. I think it is very risky. When testing kh ca mg, it doesn't make sense if SG is not fixed, so be sure to confirm SG when testing elements, so changing sea salt is a once and for all method. Reefer's Best Coral Reef Salt is a good choice and solved. K+ problem
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  #174  
Old 07-14-2018, 11:48 PM
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KH does usually fall very quick if you reduce the supplementation of it.

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  #175  
Old 07-15-2018, 05:52 AM
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KH does usually fall very quick if you reduce the supplementation of it.

G.Alexander
I dont supplement Cal Alk Mag anymore since I started Zeo. Havent needed to. Whatever the salt analysis is, is all I do since weekly water change schedule with Zeo
I am looking at HI-83300-01 Photometer to purchase. Are you familiar with it & what do you think of the quality & accuracy?
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  #176  
Old 07-15-2018, 08:43 AM
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Ask JMAC, the number of corals growing with time and environment Coral growth. Just changing water every week is not enough to stabilize the elements. Why not add kh ca mg? Are you 100% water change? How do you refresh the balance? thank you
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  #177  
Old 07-15-2018, 09:11 AM
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Ask JMAC, the number of corals growing with time and environment Coral growth. Just changing water every week is not enough to stabilize the elements. Why not add kh ca mg? Are you 100% water change? How do you refresh the balance? thank you
my KH Ca Mg is high enough with a 10% water change every week
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  #178  
Old 07-15-2018, 10:00 AM
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my KH Ca Mg is high enough with a 10% water change every week
Sounds good, I understand the meaning, thank you
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  #179  
Old 07-16-2018, 02:27 AM
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I have used their PO4 photometer in the past and it has really worked well for me, the one you think of seems to be a similar product line. Just recommend you to check before which of the chemicals or which element they offer for the meter do work in saltwater.

If the KH does not need to be supplemented it looks like your corals are not really growing, same with the algae consuming KH, not really common but it should get balanced over the time once there are more corals in the system. As long as they are doing fine lets keep the KH as it is checking it regular.

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  #180  
Old 07-16-2018, 06:04 AM
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Quote:
Originally Posted by G.Alexander View Post
I have used their PO4 photometer in the past and it has really worked well for me, the one you think of seems to be a similar product line. Just recommend you to check before which of the chemicals or which element they offer for the meter do work in saltwater.

If the KH does not need to be supplemented it looks like your corals are not really growing, same with the algae consuming KH, not really common but it should get balanced over the time once there are more corals in the system. As long as they are doing fine lets keep the KH as it is checking it regular.

G.Alexander
U are correct LPS & SPS that I have are small & fairly new. Older corals are Zoas, Palys, Shrooms & I have thinned them out to make room.
I check water parameters at least weekly. PO4 KH Ca NO3 K twice a week or more
thanks again
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