Alk and light issues

Fishhands · Jul 9, 2017

This is my updated graph. 10hrs blue and purple,6 hrs 5 percent whites

saltyfilmfolks · Jul 9, 2017

Fishhands said:
This is my updated graph. 10hrs blue and purple,6 hrs 5 percent whites

Nice.
One you estimate the par, you can then decide if you want to modify the peak time , or the intensity of the peak.

BrettMallette · Jul 9, 2017

So after reading the course of events. Id have to say your corals stripped the tank entirely of nutrients including no3 and po4. That as well as the lighting issues compounded into destroying your sps as well as wreaking havoc on your inverts. I only find issues above 13 dkh with my tank but thats just sps most lps will tolerate the higher alk so long as nutrients are thru the roof.

Fishhands · Jul 9, 2017

Tomorrow is lfs day. I will bring them water. This will be week 3 without wc so im curious.

Undertaker · Jul 10, 2017

madweazl said:
Have you checked out this video? There seems to be a relationship between high flow, high alkalinity, and higher nutrient levels. I have no first hand experience with this; I have higher flow (roughly 40x/hr in my tank) but my alkalinity is roughly 8.25 (until yesterday) with nutrient levels that are, uh, low'ish (NO3 2.5-5 and PO4 .05). Everything seems to be doing well at these levels but I just recently went SPS dominant (last two weeks).

Great video!!!!

yevgenb · Jul 10, 2017

Sounds exactly like my tank - 2 years, 10-11dkh, no growth...

Fishhands · Jul 10, 2017

Just got back from lfs.
Sg 1.024 digital tester
kh- 9.3
Ca- 390
Mg-1260
No3- 2.5
P04- 0
All done with salifert

Flippers4pups · Jul 10, 2017

Calcium and magnesium could be a little higher. But your KH is good. SG is a little low, 1.026 or 35 ppm is target. If you maintain these levels, you should have success keeping corals.

Fishhands · Jul 10, 2017

So with a little evaporation i should be right there...

saltyfilmfolks · Jul 10, 2017

As the salinity increases the KH will as well.
Prob not much, but with high alk low nutrints may be an issue.

BrettMallette · Jul 10, 2017

The zero po4 is low as well in comparison to the 2.5 no3. System is looooowwwww on nutrients. I dont test mine but id wager a guess at 10 times yours... and with my alk at 10.3 things are growing like weeds not great color but growth is thru the roof. I get a quarter inch of height growth on my Noae per cpl of months.

justingraham · Jul 10, 2017

Flippers4pups said:
Calcium and magnesium could be a little higher. But your KH is good. SG is a little low, 1.026 or 35 ppm is target. If you maintain these levels, you should have success keeping corals.

U honestly think .002 less would be a problem? If he keeps it constantly at .024 I don't think he won't have success.

Flippers4pups · Jul 10, 2017

justingraham said:
U honestly think .002 less would be a problem? If he keeps it constantly at .024 I don't think he won't have success.

Nope not at all, 1.024 "stable" is good. The point is his "stability", his overall stability will lead to his success. Hope this clears this up.

justingraham · Jul 10, 2017

Flippers4pups said:
Nope not at all, 1.024 "stable" is good. The point is his "stability", his overall stability will lead to his success. Hope this clears this up.

Ok I was just wondering I prolly read it wrong all good

We are all just trying to help the op and I think the right people are here to do that.

Fishhands · Jul 11, 2017

I guess the weeks of skipped wc helped bring things into spec. A little low on mg and ca, but i must have starved the tank if nutrients are that low... its been two weeks. I only have one fish left and it gets fed just until its belly is fat then i stop.