Hello, I am looking for some advice.
I will try to keep this as brief as I can, but still attempt to give enough background info so this makes sense.
I have a 75-gallon display that is attached to a 30 gallon frag tank. Total water volume, minus rocks etc, is about 110 gallons (75 gal display, 30 gal frag tank and Trigger ruby 36 sump).
The tank is BB and has been running for about 2 years and is mostly SPS. The tank is pretty heavily stocked with fish and corals. I run a T5/LED Nanobox retrofit fixture.
In the past I was having issues with nutrients, zero P04 and NO3, which I thought may be the cause for pale corals and slower growth. I started dosing both NO3 and PO4 to keep levels detectable, NO3 at about 3- 5 and PO4 and .03. Growth and coloration seemed to improve. I stopped dosing NO3 and PO4 after a few months, but levels remained where I wanted them so I was happy.
I was dosing with ESV B-Ionic 2-part and my tank consumed 100 Mls of each per day. Alk was stable at 8 DKH, CA was at 440 and MG was at 1400. Salinity was stable at 35 and PH fluctuated from about 8.2 to 7.9 each day/night cycle. I used Tropic Marin pro salt.
Growth and coloration were good, but I felt I could do better.
I started using Aquaforest in August 2016. I started with the probiotic salt, the component 1,2,3, Coral A, B, E, V, NP Pro and Pro Bio S. I followed Perry’s dosing schedule, where I alternated with the coral A, B, E, and V every other night with 4 drops of each after lights were out and I used 4 drops of each of the NP Pro and Pro Bio S in the AM (in sump after the protein skimmer). I started with ½ of these doses for the first 2 weeks.
I have 2 liters of Siporax in a reactor and 2 liters of Matrix in the sump. I run the Zeomix, carbon and GFO in its own reactor.
I mix my own component 1,2,3, and make 10 liters at a time. When I first started, my tank would consume 220 Ml of each component a day (which I dose 12 times throughout the day with dosing pumps at different times) with Alk stable at 8 DKH.
Coloration and growth seemed to improve within the first month of use, however my NO3 was steadily climbing, going from 3-5 to about 12-15. I assumed this had to do with the media seeding, so I cut back on feeding. My new feeding regime was 1 cube of frozen and a 2 by 3 inch piece of nori per day. I reduced my dosing of Coral A, B. E and V to 2 drops from 4 drops. Things continued to look great, but my NO3 was still slowly creeping up.
Then something weird occurred near the end of September. Within about 2 days all my coralline algae on the glass died and I noticed burnt tips on some of my acros. I tested the Alk and it had climbed to about 9.5 DKH.
I stopped dosing to bring it back down, and then reduced the amount of component 1,2,3 I was dosing, but things continued to decline. My NO3 began to climb even higher to about 20-25 and my tank was consuming less of the components 1,2,3 each day, making it hard to keep my Alk stable.
I lost several of my sps, and all of my montipora. I stopped all dosing of coral A, E and V (only dosing 2 drops of Coral B every other night).
I sent in a triton test of my water and everything seemed ok except for a slightly elevated level of Tin (6 ug/l). I checked my entire system for potential contamination, and did find one rusty screw above my sump and found a heater with some condensation inside of it.
I ended up replacing all the other heaters that I had in the system and checked all my pumps/powerheads etc, which appeared to be ok.
As of today, I am only dosing 78 Mls per day of the component 1,2,3 (down from 220 mls per day), which is holding my alk steady at 7.5 DKH. I dose 4 drops of each the NP Pro and Pro Bio S in the am and 2 drops of Coral B(uild) every other night.
I switched from the probiotic to the reef salt, and have been doing a 25 gallon water change every week (larger than normal, but I am trying to get the extra nutrients/bad juju out of the system).
My PO4 is at .1 and my No3 is at 35, which I am having a hard time getting down. I run bare bottom and visually my system is clean, no detritus in the tank, frag tank or the sump. I have rinsed my media (siporax/Matrix) in tank water and there is no detritus stuck in the media. I have been changing my zeomix (1 cup), carbon (1 cup) and GFO (1 cup) every 2 weeks to get my PO4 and NO3 down. I feed very little (no pellets, only 1 frozen cube per day, a small amount of nori and I broadcast feed my corals a small amount (AF coral food) once per week).
The SPS corals that survived (75%) are not looking great, but they aren’t worse, and some of the burnt tips seem to be slowly getting better.
Additional info, I live in Southern Ca and our water here is bad, especially where I live due to the drought (we are near the bottom of out emergency water source). I use the 6-stage universal plus BRS RO/DI. I change my sediment filter every 2 weeks (1 micron), and I add a new universal carbon filter every month (rotate one out). I am constantly re-filling my DI resin and my TDS coming out of the filter is always 0.
I contacted the city’s water department, and they advised that there have not been any changes to the chemicals added to the water, or other issues (they do, and have, used chloramines for several years).
I have not lost any fish, and I have checked on my CUC to make sure there aren’t a bunch of dead snails or something else like that in the system causing issues. I removed all the dead coralline algae flakes from the bottom of the tank.
My guess is either there was a bad heater that was contaminating the tank, I got a bad slug of water from the city, something found its way into the tank (possibly via my cat/girlfriend) or ???.
My goal is to get my NO3 back down to the 2-5 range and my PO4 back to that .03 spot before I start back up on the Coral A, E and V.
Any advice on how to fight this NO3 spike and what may have caused this overall issue?
If you have any questions please ask, I can supply pictures or whatever else
Thanks
Jason

I will try to keep this as brief as I can, but still attempt to give enough background info so this makes sense.
I have a 75-gallon display that is attached to a 30 gallon frag tank. Total water volume, minus rocks etc, is about 110 gallons (75 gal display, 30 gal frag tank and Trigger ruby 36 sump).
The tank is BB and has been running for about 2 years and is mostly SPS. The tank is pretty heavily stocked with fish and corals. I run a T5/LED Nanobox retrofit fixture.
In the past I was having issues with nutrients, zero P04 and NO3, which I thought may be the cause for pale corals and slower growth. I started dosing both NO3 and PO4 to keep levels detectable, NO3 at about 3- 5 and PO4 and .03. Growth and coloration seemed to improve. I stopped dosing NO3 and PO4 after a few months, but levels remained where I wanted them so I was happy.
I was dosing with ESV B-Ionic 2-part and my tank consumed 100 Mls of each per day. Alk was stable at 8 DKH, CA was at 440 and MG was at 1400. Salinity was stable at 35 and PH fluctuated from about 8.2 to 7.9 each day/night cycle. I used Tropic Marin pro salt.
Growth and coloration were good, but I felt I could do better.
I started using Aquaforest in August 2016. I started with the probiotic salt, the component 1,2,3, Coral A, B, E, V, NP Pro and Pro Bio S. I followed Perry’s dosing schedule, where I alternated with the coral A, B, E, and V every other night with 4 drops of each after lights were out and I used 4 drops of each of the NP Pro and Pro Bio S in the AM (in sump after the protein skimmer). I started with ½ of these doses for the first 2 weeks.
I have 2 liters of Siporax in a reactor and 2 liters of Matrix in the sump. I run the Zeomix, carbon and GFO in its own reactor.
I mix my own component 1,2,3, and make 10 liters at a time. When I first started, my tank would consume 220 Ml of each component a day (which I dose 12 times throughout the day with dosing pumps at different times) with Alk stable at 8 DKH.
Coloration and growth seemed to improve within the first month of use, however my NO3 was steadily climbing, going from 3-5 to about 12-15. I assumed this had to do with the media seeding, so I cut back on feeding. My new feeding regime was 1 cube of frozen and a 2 by 3 inch piece of nori per day. I reduced my dosing of Coral A, B. E and V to 2 drops from 4 drops. Things continued to look great, but my NO3 was still slowly creeping up.
Then something weird occurred near the end of September. Within about 2 days all my coralline algae on the glass died and I noticed burnt tips on some of my acros. I tested the Alk and it had climbed to about 9.5 DKH.
I stopped dosing to bring it back down, and then reduced the amount of component 1,2,3 I was dosing, but things continued to decline. My NO3 began to climb even higher to about 20-25 and my tank was consuming less of the components 1,2,3 each day, making it hard to keep my Alk stable.
I lost several of my sps, and all of my montipora. I stopped all dosing of coral A, E and V (only dosing 2 drops of Coral B every other night).
I sent in a triton test of my water and everything seemed ok except for a slightly elevated level of Tin (6 ug/l). I checked my entire system for potential contamination, and did find one rusty screw above my sump and found a heater with some condensation inside of it.
I ended up replacing all the other heaters that I had in the system and checked all my pumps/powerheads etc, which appeared to be ok.
As of today, I am only dosing 78 Mls per day of the component 1,2,3 (down from 220 mls per day), which is holding my alk steady at 7.5 DKH. I dose 4 drops of each the NP Pro and Pro Bio S in the am and 2 drops of Coral B(uild) every other night.
I switched from the probiotic to the reef salt, and have been doing a 25 gallon water change every week (larger than normal, but I am trying to get the extra nutrients/bad juju out of the system).
My PO4 is at .1 and my No3 is at 35, which I am having a hard time getting down. I run bare bottom and visually my system is clean, no detritus in the tank, frag tank or the sump. I have rinsed my media (siporax/Matrix) in tank water and there is no detritus stuck in the media. I have been changing my zeomix (1 cup), carbon (1 cup) and GFO (1 cup) every 2 weeks to get my PO4 and NO3 down. I feed very little (no pellets, only 1 frozen cube per day, a small amount of nori and I broadcast feed my corals a small amount (AF coral food) once per week).
The SPS corals that survived (75%) are not looking great, but they aren’t worse, and some of the burnt tips seem to be slowly getting better.
Additional info, I live in Southern Ca and our water here is bad, especially where I live due to the drought (we are near the bottom of out emergency water source). I use the 6-stage universal plus BRS RO/DI. I change my sediment filter every 2 weeks (1 micron), and I add a new universal carbon filter every month (rotate one out). I am constantly re-filling my DI resin and my TDS coming out of the filter is always 0.
I contacted the city’s water department, and they advised that there have not been any changes to the chemicals added to the water, or other issues (they do, and have, used chloramines for several years).
I have not lost any fish, and I have checked on my CUC to make sure there aren’t a bunch of dead snails or something else like that in the system causing issues. I removed all the dead coralline algae flakes from the bottom of the tank.
My guess is either there was a bad heater that was contaminating the tank, I got a bad slug of water from the city, something found its way into the tank (possibly via my cat/girlfriend) or ???.
My goal is to get my NO3 back down to the 2-5 range and my PO4 back to that .03 spot before I start back up on the Coral A, E and V.
Any advice on how to fight this NO3 spike and what may have caused this overall issue?
If you have any questions please ask, I can supply pictures or whatever else
Thanks
Jason




