I am really good at growing algae on acropora tips.

[graihg]

I know, you must all be super, super jealous.

Here is one more:

By the way, trying to scrub off the algae with a toothbrush in a test spot did not work. Algae returns stronger.

 

[shakacuz]

do you think your lights are too much for them? burnt tips usually indicates too much light.

try lowering intensity, or distance from the water line.

 

[graihg]

do you think your lights are too much for them? burnt tips usually indicates too much light.

try lowering intensity, or distance from the water line.

I did not know this. Come to think of it, this started happening after I added supplemental lighting...

 

[Jimbo327]

I'll one up you. I can grow algae anywhere.

 

[graihg]

do you think your lights are too much for them? burnt tips usually indicates too much light.

try lowering intensity, or distance from the water line.

3 Hydra 32s at 100% for 5 hours with 2 hour ramp up and 2 hour ramp down.
2 Orphek (4 foot bars) at 100% for 3 hours - mounted 12 inches above waterline

that doesn't seem like too much, right?

 

[graihg]

I'll one up you. I can grow algae anywhere.

bahaha. you should join the swimming pool industry

 

[shakacuz]

3 Hydra 32s at 100% for 5 hours with 2 hour ramp up and 2 hour ramp down.
2 Orphek (4 foot bars) at 100% for 3 hours - mounted 12 inches above waterline

that doesn't seem like too much, right?

doesn't SEEM much, but the burnt tips definitely point towards that direction. can only assume, unless you have access to a PAR meter.

do the orphek's go on at peak(the 3hrs), or turn on once your hydra's start ramping? are the hydra's also mounted 12" from water line?

 

[Dburr1014]

I know, you must all be super, super jealous.

Here is one more:

By the way, trying to scrub off the algae with a toothbrush in a test spot did not work. Algae returns stronger.

What's your nutrients?

 

[shakacuz]

What's your nutrients?

good catch! totally forgot po4 does that, too.

 

[graihg]

What's your nutrients?

Never seen this. Super interesting.
I'll post nutrients

 

[graihg]

Current Nutrients
Ca - 480
Alk - 8
pH - 8.3
ORP - 282
NO3 - 18.2
PO4 - .08
Mg - 1390
Sal - 1.026
125g mixed reef trying to go acro-dominant.
All Hanna testers, except Alk and Ca are Fritz.

 

[dwest]

I’ve seen that with using GFO as well.

 

[graihg]

temp - 78

 

[graihg]

I’ve seen that with using GFO as well.

I'm using 3 tsp every 2 weeks mixed into 1 cup carbon...does that seem like too much?

 

[shakacuz]

I'm using 3 tsp every 2 weeks mixed into 1 cup carbon...does that seem like too much?

if you use that amount without drastic drops or increases in no3/po4, you should be okay. every tank is different.

 

[Troylee]

Direct and blunt flow is about the only time I’ve seen that in my tanks..

 

[graihg]

doesn't SEEM much, but the burnt tips definitely point towards that direction. can only, assume unless you have access to a PAR meter.

do the orphek's go on at peak(the 3hrs), or turn on once your hydra's start ramping? are the hydra's also mounted 12" from water line?

the hydras are mounted at 12 inches also
the orpheks turn on at the beginning of the Hydra peak

 

[graihg]

Direct and blunt flow is about the only time I’ve seen that in my tanks..

this might be it. by "direct" do you mean a foot away and 3 inches out of the path of an mp40?
...i'll go take a picture

 

[Jimbo327]

What's your nutrients?

Like everyone else: Good.

 

[dwest]

I'm using 3 tsp every 2 weeks mixed into 1 cup carbon...does that seem like too much?

Hmmm. Probably not in 125 gallon tank.

I see good coralline growth so that is good. If it were my tank I would back off the lights some and run without GFO for a while. I would probably use less carbon as well (I use 1/2 cup ROX carbon in my sump replaced every 3 weeks in my 180).

Then evaluate.

Are any acros growing well?