No alk or calcium consumption

Rawsreef

Well-Known Member
View Badges
Joined
Oct 19, 2021
Messages
501
Reaction score
254
Location
miami
Rating - 0%
0   0   0
Hi everyone, and merry Xmas!

I have a rather odd situation going on, where I’ve noticed my alk and calcium are not being consumed as it should, which I also feel is impacting coral growth.


Tank is my parents 90 gallon that has been running for over a decade, any corals that were in it died about 5 or 6 years ago. (Due to lack of knowledge). Most of our fish made it at least!

lighting is a 6 bulb t5ho fixture I purchased online. Will post pic
along with some bulbs we bought at one of our LFS, not sure what brand they were. At the time I didn’t know too much about lighting, and I had to buy 6 bulbs because I had dropped our tank top and broke our previous 4 bulb setup…. I remember they didn’t have any bulbs in stock at the time but they were able to get me some the next day for a pretty low price.


I got my hands on the tank early 2020 and I’ve been slowly (not too slowly, I admit) adding corals/inverts to make it a fully established mixed reef.

Everything’s been going rather well *knock on wood* , since this is such an established tank, I feel it has allowed for some wiggle room during my learning curve.

During the year I’ve lost :
-Around 4 rock flower nems, one or two actually died. Other 2 disappeared somewhere never to be seen again. Hoping they’re behind rock work alive lol.
- 2 torches that died within a week.
- 3 of my sps corals that were supposed to be very hardy corals. The first to go was my purple stylo, or a smooth acro that my buddy gifted me. Not sure if the acro was dead first since it was one of those acros that doesn’t have any polyp extension, I never really noticed it dying until it was covered in algae.


So here’s the reason I feel the need to share the corals I have lost during this time. I suspect the issue may be my the bulbs, or maybe the actual fixture? Which I doubt it’s the fixture, leaning more on the bulbs.

Not sure if lighting can be the cause of the corals dying, the reason for alk/calcium not to be consumed, and the slow growth?


light fixture :
6A2AB078-713C-4859-9290-45243FE9552A.jpeg

Tank pic a few months ago :
5B59C353-8862-4531-B2EE-16E646C3D599.jpeg

Tank pic today :


B038E412-1D1A-45B0-99BE-8521F6FAE181.jpeg

Apart from new corals looking great. Nothing but my Xenia’s and gsp are growing at a noticeable rate. I have 1 acan growing a new polyp and some zoas that have sprouted new polyps here and there.



Anyone can help me?
 
Just realized I never posted my Params

my alk is about 8.4 dkh as of today.

I tested after my last water change about a week ago and it was also 8.4.

Calcium is 400 as of today,

I measured 400 right after last wc.

Everything else normal besides high nitrates like always, (prob my feeding habits)
Salt - 1.026
Ammonia 0
Nitrites 0
Nitrates 20-50 ppm really hard to tell

don’t usually test mag but last time I checked it was at 1360
 
Did you ever get any insight here?

I also have a mixed reef tank (135gal) that doesn't consume any Ca/Mg/Alk and I'm certain its inhibiting growth.
 
Did you measure phosphate? Afaik high phosphate levels will inhibit calcification. (Any reefers out there correct me if im wrong)

While some data suggests that, some corals do great at very high phosphate:


Rich’s 150 gallon display, on a 300 gallon system, is running a phosphate level of 1.24 ppm, a level at 24.8 times higher than the often recommended .05 ppm. Photo by Richard Ross.

1648124225675.png
 
Did you ever get any insight here?

I also have a mixed reef tank (135gal) that doesn't consume any Ca/Mg/Alk and I'm certain its inhibiting growth.
Unfortunately I have not, still having the same issue with no consumption. I’ve also lost a few polyps on some corals since the last time I posted here.

I did find that my magnet cleaner was rusting through the black cleaning surface. Since I noticed this and removed it, i did a 20% water change and everything seems much happier. For the time. I’ll prob do another soon



I suspect i have some pollutants in my tank that are hurting the inhabitants. I also found a rusty razor blade in the sand about 2 months back. Also I do not use Rodi only ro for my salt mixes and top offs.

I think the mix of all of this is what is hurting my reef and slowly killing it
 

IF YOU HAD TO TAKE A REEFING EXAM, WOULD YOU PASS?

  • Yes!

    Votes: 32 45.7%
  • Not yet, but I have one that I want to buy in mind!

    Votes: 9 12.9%
  • No.

    Votes: 26 37.1%
  • Other (please explain).

    Votes: 3 4.3%
Back
Top