Toadstool Coral Yellow Spots

[AquaSalt]

Hi, i am new to this forums but i was just wondering if you could help me to identify what are those Yellow spots on my toad mushroom are? my paramets are good, enough water circulation and ext.

 

[ccCapt]

It looks like it's starting to bleach. What exactly are your water parameters....in real numbers, not just "my paramets are good". What kind of lighting do you have?

 

[AquaSalt]

Let me check tonite and I'll post it, thx for helping, my lights are 2x58 watts t5 and 2 Koralia power heads about 800gph

 

[AquaSalt]

Hi again, ok my Parameters are
Ammonia - 0
PH - 8.2
Nitrite 0
Nitrate 20 ppm
Calcium 460-480 ppm
Alkalinity 3.0 meg/L

 

[ccCapt]

Nitrate is on the high side. I would do a bunch of water changes to get that down. What size tank is this? A 2 bulb fixture is not much light, especially if 1 of the bulbs is an actinic (blue).

 

[AquaSalt]

Nitrate is on the high side. I would do a bunch of water changes to get that down. What size tank is this? A 2 bulb fixture is not much light, especially if 1 of the bulbs is an actinic (blue).

It's a 55g tank , 48" long I just ordered Metal Halide 20000k fixture, you think that will fix it?