Galaxea

[guitaris70]

So I woke up this morning to see one small spot on my galaxies all white or "bleached" it's a large galaxea and the rest of the coral looks normal and all of the other corals in my tank are fine. The spot is a random spot on its left side in the middle so I thought it was odd, any ideas why ?

 

[guitaris70]

Here's a picture

 

[twilliard]

Flow direction?

 

[guitaris70]

It's getting almost a direct flow from the right and an indirect flow from the left

 

[sheldonjjessup]

Perhaps they were "tasted"

 

[Joey waid]

The whole thing looks really receded. You should not see any of the heads. It should look like one big puff ball... at least that's my opinion..

 

[guitaris70]

The whole thing looks really receded. You should not see any of the heads. It should look like one big puff ball... at least that's my opinion..

I wonder if should adjust the flow maybe?

 

[Joey waid]

I wonder if should adjust the flow maybe?

That's my guess.

 

[guitaris70]

That's my guess.

Just did I'll give it some time and see if it puffs up

 

[guitaris70]

Perhaps they were "tasted"

I've had it for a couple months and nothing's had a taste of it but I guess anything is possible lol

 

[reeferfoxx]

I've had it for a couple months and nothing's had a taste of it but I guess anything is possible lol

Looks like a fairly new tank. Have you been testing parameters?

 

[guitaris70]

Looks like a fairly new tank. Have you been testing parameters?

Yeah everything's in order salinity 34 ppm, ammonia 0, nitrites 0, nitrates 5 or less, Calcium 460, magnesium 1400, Phosphates 0-.25, Kh 10, nothing unusual for it so I'm not sure and it's been up a little over 3 months

 

[guitaris70]

Yeah everything's in order salinity 34 ppm, ammonia 0, nitrites 0, nitrates 5 or less, Calcium 460, magnesium 1400, Phosphates 0-.25, Kh 10, nothing unusual for it so I'm not sure and it's been up a little over 3 months

pH 8.2

 

[reeferfoxx]

Yeah everything's in order salinity 34 ppm, ammonia 0, nitrites 0, nitrates 5 or less, Calcium 460, magnesium 1400, Phosphates 0-.25, Kh 10, nothing unusual for it so I'm not sure and it's been up a little over 3 months

With a dkh of 10, I would look into a better form of phosphate testing. API isn't always accurate.

 

[guitaris70]

With a dkh of 10, I would look into a better form of phosphate testing. API isn't always accurate.

Alright, and I only use Ro/Di water I have my own unit

 

[reeferfoxx]

Alright, and I only use Ro/Di water I have my own unit

RO/DI is a major plus. That is a good thing.

 

[guitaris70]

With a dkh of 10, I would look into a better form of phosphate testing. API isn't always accurate.

What's the link between dkh and phosphates?

 

[reeferfoxx]

What's the link between dkh and phosphates?

The higher amount of alk will increase calcification. When calcification happens the uptake of nutrients occurs. In correlation to po4 it's called calcium phosphate precipitation. This is also a food source for coral. Without the presence of nutrients, you will see bleaching. Too much nutrients can inhibit coral growth and cause exponential zooxanthellae growth. This growth will begin to appear brown thus causing coral to turn a darker color known as "browning".

 

[guitaris70]

The higher amount of alk will increase calcification. When calcification happens the uptake of nutrients occurs. In correlation to po4 it's called calcium phosphate precipitation. This is also a food source for coral. Without the presence of nutrients, you will see bleaching. Too much nutrients can inhibit coral growth and cause exponential zooxanthellae growth. This growth will begin to appear brown thus causing coral to turn a darker color known as "browning".

So live aquaria always says dKh 8-12 but you recommend keeping it on the lower side ?

 

[reeferfoxx]

So live aquaria always says dKh 8-12 but you recommend keeping it on the lower side ?

Higher dkh is acceptable with higher nutrients