• Poor condition of the corals.

  • Frank7213

Hello! A little over a week ago, due to a voltage drop in the network, the ballasts of the lamps in the luminaire failed. The aquarium was without light for 2 days. After restoring the daylight (from 8 to 22 - 2 actinic lamps of 24 watts, from 11 to 17 MH 250 watts) some corals are not fully opening: zoanthus, xenia, sinularia, rhodactis. The most interesting thing is that the corals that recently arrived from Alexey () - sarcophyton and zoanthus - are doing great. The water parameters are as follows: - ammonia 0.25 ppm - nitrite 0 - calcium 375 ppm - pH 8.1 - KH 7.0 - temperature fluctuates 25-27 degrees. Tests for nitrates and phosphates were not done. 3 days ago, a 10% water change was made. So far, I haven't noticed any difference in the well-being of the corals. What should I pay attention to? What

Jesse

I measured the nitrates - 80 ppm. I'm doing water changes.

Yolanda

Nitrate is not measured in ppm. There is not enough calcium. Wait a couple of days, I think they will recover. Try turning off the MG.

Earl

Why is it not measured? 80 mg/L = 80 ppm

Jacob4800

80 mg/L is a lot, but it's not scary for soft corals; they will absorb it all in a couple of weeks and increase their body volume. Just high nitrates can cause a bloom of lower organisms in an unstable system, which is scary and not good, but it won't be critical for LPS, and it will be even worse for SPS. I've personally tested this on my own corals.

Frederick

I know for sure that nitrates are measured in mg/L, while ppm is the amount of dissolved salts.

Ryan1989

This is the same (millionth part) - for aqueous solutions, the unit of measurement, i.e. 1=1.

Robert5335

What is the most suitable nitrate level for softness?

Cheryl

It's better to keep it between 20-40, but I've noticed that different types of softness can have varying tolerance levels for nitrate; some species don't tolerate it well at all, while many will do fine even at zero.