Need help with my current lighting situation

aus1230

Active Member
View Badges
Joined
Apr 13, 2025
Messages
296
Reaction score
77
Location
Austin
Rating - 0%
0   0   0
I currently have a 40 gallon long IM tank that has two AI prime 16s on the outside and a Prime 32HD in the center. I'm currently struggling with Cyano and thought I might be able to come here and see if anyone could tell me anything with my light schedule or if this is probably too much lighting over a 40 gallon long (which I'm sure it is). I have already decided to separate the primes from the 32 HD but I'll be honest I have no idea if I'm lowering the intensity correctly. Ultimately I'm sure I need to purchase a PAR meter.
tempImageSIPVhj.jpg
IMG_0227.jpg
IMG_0228.PNG
 

Dom

Theoretical Reef Keeper
View Badges
Joined
Apr 29, 2016
Messages
7,753
Reaction score
8,190
Location
NY
Rating - 0%
0   0   0
So its really a Cyano situation, not a lighting situation.

I would be curious to know what your nitrates and phosphates are as I don't believe lighting is the cause.
 
OP
OP
A

aus1230

Active Member
View Badges
Joined
Apr 13, 2025
Messages
296
Reaction score
77
Location
Austin
Rating - 0%
0   0   0
So its really a Cyano situation, not a lighting situation.

I would be curious to know what your nitrates and phosphates are as I don't believe lighting is the cause.
20260208_215711_2066E29D-1E30-4509-AE94-C2475D4F694C.png

20260208_215711_9967ED0A-769D-4320-B186-6DD3BAA405C2.png
Sure here you go.
 

Dom

Theoretical Reef Keeper
View Badges
Joined
Apr 29, 2016
Messages
7,753
Reaction score
8,190
Location
NY
Rating - 0%
0   0   0
20260208_215711_2066E29D-1E30-4509-AE94-C2475D4F694C.png

20260208_215711_9967ED0A-769D-4320-B186-6DD3BAA405C2.png
Sure here you go.

Am I missing something? Which of these are nitrates and which are phosphates?

It looks like top is phosphate and bottom is nitrate?
 
OP
OP
A

aus1230

Active Member
View Badges
Joined
Apr 13, 2025
Messages
296
Reaction score
77
Location
Austin
Rating - 0%
0   0   0
Am I missing something? Which of these are nitrates and which are phosphates?

It looks like top is phosphate and bottom is nitrate?
Sorry about that. Top one is phosphates and the bottom is nitrates.
 
OP
OP
A

aus1230

Active Member
View Badges
Joined
Apr 13, 2025
Messages
296
Reaction score
77
Location
Austin
Rating - 0%
0   0   0
Am I missing something? Which of these are nitrates and which are phosphates?

It looks like top is phosphate and bottom is nitrate?
I am also currently testing my nitrates and phosphates in the morning and the afternoon to make sure that I am crossing that off my list of possible reasons for the Cyano. I am just making sure that my light settings are good as well. Trying to check off all of the possible culprits off the list as I know this can be a very complex thing with multiple reasons.
 

Dom

Theoretical Reef Keeper
View Badges
Joined
Apr 29, 2016
Messages
7,753
Reaction score
8,190
Location
NY
Rating - 0%
0   0   0
Sorry about that. Top one is phosphates and the bottom is nitrates.

I was thinking that your nitrates may have zeroed out.

I'm currently dealing with the same situation. But it has improved since I began dosing to raise nitrates.
 
OP
OP
A

aus1230

Active Member
View Badges
Joined
Apr 13, 2025
Messages
296
Reaction score
77
Location
Austin
Rating - 0%
0   0   0
I was thinking that your nitrates may have zeroed out.

I'm currently dealing with the same situation. But it has improved since I began dosing to raise nitrates.
I have struggled with them in the past getting to the lower side but have never bottomed out. So I have decided to feed a little more so I've bumped by daily feeding to 1.5 cubes of Mysis shrimp and plan to monitor twice a day to see what my tank is doing.
 

Tikki

Active Member
View Badges
Joined
Jul 8, 2025
Messages
158
Reaction score
142
Location
Pensacola
Rating - 0%
0   0   0
Are you sure it’s not dinos?
How’s flow?
It is. I keep writing these saying it’s cyano but it’s Dinos.
Oh okay, well lot’s of good info online for battling dinos. Will be helpful if you have access to a microscope for identification. It’s been a while since I’ve dealt with them but humblefish has some good info if I recall. I think adding UV and making sure nutrients weren’t bottoming out was the main thing that helped me.
 

TOP 10 Trending Threads

WHAT AMOUNT OF LIVE ROCK AND SAND SHOULD BE PRIORITIZED FOR OPTIMAL BIODIVERSITY/FILTRATION?

  • 100% live rock + bagged sand

    Votes: 34 26.6%
  • 100% dry rock + 100% live sand

    Votes: 45 35.2%
  • 50/50 live/dry rock, 50/50 live/bagged sand

    Votes: 28 21.9%
  • 75% live rock, 25% live sand

    Votes: 11 8.6%
  • 25% live rock, 75% live sand

    Votes: 10 7.8%
Back
Top