New to ZEO, tank still establishing, checking that my approach is OK

[VA ZEO]

Hi all,

I have a newer tank and I am having some trouble. I had SPS in the tank as early as mid October and they did great, they were growing and encrusting, but they have gone downhill since late November/early December. I believe that my problems are rooted in a fish loss that I could not locate and the fact that i used primarily base rock instead of live rock.

I have a Triton ICP analysis from late December if you would like me to post that as well. I will also try to post some pictures of the corals a bit later.

Here are the tank questions:

1. Gross water volume of your complete system (incl. sump etc.) - US gallons / UK gallons / liter
RedSea Reefer Display: 92 gallons, Custom Sump: estimated 18-20 gal Total volume: 110ish gallons

2. Net water volume (incl. sump etc.) - US gallons / UK gallons / liter:
Unsure, 95 Lbs rock added to display approximately 90-100 gallons total?

3. Are you using a CaCO2 reactor or other technique
No

4. Are you using a PO4 reactor (how long, how long ago, etc.)
No

5. Are you using Ozone
No

6. Are you using UV
No

7. What skimmer are you using (type, rated water volume)
Reef Octopus, eSsence 130 - Heavy Bioload - 75 Gallons; Medium Bioload - 120 Gallons;
Light Bioload - 160 gallons

8. What are your actual PO4 and NO3 levels
PO4: .175 (Hannah ULR meter)
NO3: 3 ppm (Nyos test kit)
Note: PO4 was around .05 from August to December. I belive the spike came from a wrasse that died (and I could not find) combined with faulty automatic feeder that dumped too many pellets. This caused PO4 to spike to .25, and No3 to spike from <1 to 5ppm. I have been using coral snow, and water changes to try and slowly bring both back down.

9. What are your actual Ca, Alk and Mg levels
Ca: Trident - 495, RedSea 450
Alk: Trident - 7.2, Hannah 7.3
Mg: Trident – 1324

10. What filtration method do you use (refugium, DSB, Miracle Mud, etc.)
Skimmer, Zeovit, MarinePure Block (8x8x4 (had to cut it to put it where I wanted it.

11. Type of light (Watt, color temp, how old, etc.)
Atlankik Orphek (Gen2) x 2 runs on a custom setting right now. See chart below.
2 x 54w T5 HOs, ATI Blue plus spectrum bulbs, on from 1330-1615

12. What corals do you keep
Currently Zoas, LPS, SPS (SPS are unhealthy)

13. Tissue color (light or dark)
Dark – browning, not colorful – STNing on SPS

14. How long has the tank been running
Started August 1, 2020

15. Why do you want to use the ZEOvit system
Effective nutrient control & ability to manipulate colors

16. Any supplemental dosing (type, amount, why, etc.)
BRS 2part & magnesium to maintain levels

17. Live rock (how much, how old, etc.)
80lbs base/dry rock started Aug/2020 (soaked in R/O water for 2 months and monitored for Po4 release, found none. 15 lbs live rock that have been in tanks for over 25 years, about to add another 30ish lbs from an established tank (20+ years in a tank).

18. Any present problems
SPS STN montis, acros, LPS (some) are receding, zoas & cyphastrea look healthy

19. Problem description (tissue loss tips, tissue loss base, diatom bloom, algae, etc.)
STN is dying from the base up. LPS look terrible and are receding

20. What test kit do you use (how old, recently switched, etc.)
Mixed. Trident primarily for Alk, Ca, Mg. Hannah for Po4 and sometimes for Alk. Nyos for No3, Tropic Marin for No2 & No3 occasionally, Salifert for potassium. All within expiration dates.

21. Present dosing, amounts and intervals (ZEOvit, ZEObak, ZEOfood, ZEOstart, ZEOspur2, etc.)
ZEOvit: 1 L, 90% replaced every 8-10 weeks (run in a Skimz ZAR 127, flow level 3, agitation every hour)
ZEObak: 4 drops Wednesday and 4 drops Sunday
ZEOstart: .45ml morning and night, daily
Sponge Power: 4 drops daily
Coral Snow: 5ml approx. every 1.5 weeks.

Have, but not currently dosing:
ZEOfood Plus– I discontinued after a cyano bloom in October
Coral Booster
Coral Vitalizer
Pohl’s xtra


22. Other water parameters and water stability (salinity, temp, etc.)
SG 1.026 Apex and Refractometer
Temp: 76.7-77.9 daily swing (Apex and separate thermometer & inkbird temp controller)
PH: 8.11-8.35 daily swing

23. Which salt brand do you use
Started the tank with Tropic Marin Pro but needed more and could not locate any, so I have been using RPM blue box since September 2020.


Thank you in advance for any input.

[VA ZEO]

[VA ZEO]

Triton Sample taken on 12/15, analyzed on 12/23

[G.Alexander]

Welcome to ZeoVit.com !

From your description I can not see anything really problematic except the PO4 level which is really high. Can you tell something more about the cycle of the system ? Have you used ZeoVit since the beginning and cycled the system with the 14 day cycling method ? It would also be interesting to know if you have sand in the system or if you run it without a sand bed.

Is the PO4 level of 0.175 in mg ?

Please also post a picture of your sump.

G.Alexander

[VA ZEO]

***EDITED***
Thank you for the response.

I did cycle the tank, but I used the KZ guidance since I had not found the forum yet.

po4 is in ppm, converted from the ppb reading that the Hi736 reads out.
Ive tested my po4 several times over the past 2 days, and it appears that my po4 is dropping rapidly. I will Continue to test 2-3 times daily since I do not trust that i get all of the reagent from the hannah packet into the vial.
Here are the latest readings:
1/7, 8am .175 ppm
1/7, 10pm .15 ppm
1/8, 830am .07ppm


Yes I have used KZ ZEOvit from day 1.
I did follow KZ guidelines for the 14 day cycle - I had not found this forum or the recommendations on here yet.
Yes I do have a sand bed. It averages 1-2 inches deep in most places and it is the Tropic Eden Mesoflakes (2.7mm grain size) - approximately 70LBs. I thoroughly cleaned the sand and soaked it in R/O D/I water for 4 weeks (wanted to check it for PO4), then dried it, prior to starting the tank

Here are pictures of the sump. I cleaned the zeo reactor on 12/26 when I swapped zeovits. The flow seemed very limited, so I felt like it needed to be cleaned. In hindsight, maybe I should have only cleaned the pump and left the reactor body alone. I did save and use 10% of the old material.

My fish/bio load is somewhat heavy:
1 purple tang - approximately 2-2.5"
Yellow Corris Wrasse - 4"
2 lyretail Anthias - 2"
3 Green Chromis 1.5-2"
1 Pintail Fairy Wrasse - 4"
2 OC Clownfish 2.5-3"
1 court jester goby - 1"
1 Green Mandrian Goby- 3"
Longspine Urchin
Cleaner Shrimp
Croal Banded Shrimp
Fighting Conch
approx 60 various snails


last, I started the system using rox carbon,, before i read here that that is too aggressive for zeovit. I changed over to BRS lignite in October. I was running the carbon in a reactor, but last week i put the carbon into a bag and it is sitting in the sump near the zeo reactor.


thanks again!

Devin

[G.Alexander]

Thank you for the additional information. As PO4 already starts to decrease I would not do anything special to speed up this process.

Lets continue dosing as follows:

ZeoBac – 4 drops 3 x weekly
ZeoStart – 0.4 ml 2 x daily
SpongePower – 4 drops every other day
CoralSnow – 4 ml 2 x weekly
CoralVitalizer – 8 drops 2 x weekly

If PO4 is solid low and corals doing better you can additional dose Xtra, Booster & Food.

Run 1 liter ZeoVit in your reactor with a water flow of ~ 100 US gallons per hour – replaced every 6 weeks.

My experience with the carbon you use is limited so I can not really say much about it but 0.4 liters passively flown in the sump would be the right amount replaced every 4 weeks.

The Ca level is to high, let it drop to ~ 400 and keep it there as solid as possible.

Once the system has stabilized I would recommend to remove the BioBlocks step by step slowly.

As PO4 starts to come down I would expect that your corals slowly start to recover so I would give them some time now.

Vacuum the sand from time to time while doing the weekly regular water changes to remove the sediments from the deeper sand layers.

G.Alexander

[VA ZEO]

Thanks G. Alexander.

I'll make the dosing changes and follow the schedule and recommendations that you have planned out. Also, I will report progress or changes as they start to occur.


Thanks again!
Devin