Cyanobacteria in Marine Tank

Peter_B2001

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Hello everyone,
So I have Cyanobacteria growing in my marine tank with seahorses.
My nutrient levels are as follows:
Nitrate 0.15
KH 8.7
Magnesium 1170 (raised it today)
Calcium 375 (raised it today too)
Phosphorus 0.02

anyone know what to do ? Increase flow rate or what? As I only have the exhaust two pipes one pointing down and one up to mix the top water. I have seahorses so I didn’t buy any wave machine is it needed or is there a way to remove it ?

please let me know as my Coral has also started to bleach and not sure why as there was no temperature increase or anything like that ? My phosphates were high with nitrates but it’s is down now could this be it ? Wil it grow back or ? As the Cyanobacteria keeps growing, is there no critters that remove it as I have trochus snails, nassrius and also a Mexican snail.

thanks
 

DanyL

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How high were your nutrients before and how/why did they deplete?

Coral in general do not like drastic, fast changes to the water chemistry and will react badly to this.
Same goes for cyano bacteria, while there is a ratio you'd want to roughly keep between PO4 and NO3, cyano can also appear solely from nutrient instability.
 

Zach B

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How old is the tank? Cyano isn't uncommon in newer setups that are lacking a bit in biodiversity and bacteria. My tiger conchs eat cyano but it usually goes away in time. You could manual remove as much as possible to help it out as well. Best of luck
 

brandon429

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How many gallons is the tank, this is most crucial to know in invasion challenges

Nanos have a trick for fixes large tankers do not have, based on size of tank.
 

knockout

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Adding a reputable bacteria source should add, decreasing the light period is a temporary option too, tank size and pic if possible will help too.
 

EeyoreIsMySpiritAnimal

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Contrary to popular belief, seahorses tanks should have a decent amount of flow. The key is to have some areas of lower/less direct current as well as abundant spots for the ponies to hitch. When I had my seahorse tank, the ponies would actually play ("surf") in front of the return nozzle. They'd take turns like it was a water park ride, lol.

My point is, along with the other advice already given, if you feel that cyano is collecting in dead/low flow spots, increasing it some won't harm the seahorses.
 
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Peter_B2001

Peter_B2001

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Contrary to popular belief, seahorses tanks should have a decent amount of flow. The key is to have some areas of lower/less direct current as well as abundant spots for the ponies to hitch. When I had my seahorse tank, the ponies would actually play ("surf") in front of the return nozzle. They'd take turns like it was a water park ride, lol.

My point is, along with the other advice already given, if you feel that cyano is collecting in dead/low flow spots, increasing it some won't harm the seahorses.
Perfect I ordered a Wavemaker Shouod come in 2 days and yeh I can see detritus settling under the flow valves all of it there yuckkkk. So that should help hopefully, will I need to make some sort of mesh cover for the Wavemaker too for the seahorse tails I heard?
 
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Peter_B2001

Peter_B2001

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How high were your nutrients before and how/why did they deplete?

Coral in general do not like drastic, fast changes to the water chemistry and will react badly to this.
Same goes for cyano bacteria, while there is a ratio you'd want to roughly keep between PO4 and NO3, cyano can also appear solely from nutrient instability.
I added vodka which helped daily and then I ordered seachem phosmate remover rocks didn’t do anything so I ordered this lanthum solution which is amazing and works a great to remove phosphates from 0.08 to like 0.02 now in around a week. And vodka dosing for about a month now went from around 60 to around 15 now
 
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24 - 27 Water temp for sea horses 13 October Tank StartedOptimum Parameters13/10/202214/10/2022 AM14/10/2022 PM15/10/2022 AM15/10/2022 After Water Change16/10/2022 AM16/10/2022 2pm16/10/2022 9pm17/10/2022 9AM17/10/2022 8PM Same Each Day19/10/202220/10/202221/10/202222/10/202223/10/202224/10/202225/10/202225/10/2022 7pm26/10/2022 11AM27/10/202228/10/202229/10/202230/10/202230/10/2022 After 20% (10l) water change 31/10/202201/11/20222/11/20222/11/2022 after 10l water change 3/11/20224/11/2022 AM4/11/2022 PM5/11/2022 AM5/1120226/11/2022 PM7/11/2022 AMAfter water change8/11/20229/11/20229/11/2022 PM10/11/2022 AM10/11/2022 PM AFTER WATER CHANGE AND MG ADDED11/11/2022 PM12/11/2022 AM12/11/2022 PM13/11/202213/11/2022 PM14/11/202215/11/202216/11/202217/11/202218/11/2022 PM 21 and 22/11/202223/11/2022 AM before grow light turned on26/11/2022 AM27/11/2022 AM28/11/2022 PM29/11/2022 PM1/12/20223/12/2022 after water change 5/12/20226/11/20227/11/20228/11/202210/11/202211/12/202212/12/202213/12/202217/12/202218/12/202230/12/20225/1/2310/1/2317/1/23
Salinity1.020 to 1.027 Best 1.023 for sea horses! 1.0231.0241.0241.0241.0241.0251.0231.0251.023
pH8.2 to 8.58.07.88.08.18.18.188888.0 (darker today87.47.68.8!7.67.87.87.887.67.67.68-8.18.28 no bubbles 7.8-87.87.88.07.57.88.38.0
Ammonia ppmLess than 0.1ppm0.150.150.250.50.250.350.2500000.050.050.10.100.1 at 10am 0.1 at 3pm0.12.02.02.0 morning, 1.5 then 1.0 at 4 , 1ppm after water change.2ppm1ppm2ppm8ppm8ppm4-8ppm8ppm888888120.50.150.25 0.15 then 0.25 at 11:30pm0.150.150.150.150.050.150.250.150.150.150.250.150.050.050.250.050.050.050.15
Nitrite ppm0 ppm0.2500000000000000000000000.51121222210.750.75 same at 11:30pm0.75 same as yesterdays colour 0.750.752.02.01-20.750.750000000
Nitrate ppmLess than 30/40 ppm302040802040300000000200000000005ppm5ppm51020404080160401605016060200200806060603030/4030/4030/404020 / 70 at 11pm254040403035402545453020202.5
DkH8 - 12dKH10.9Very high Very High~45~50 Decreased by 0.5ml less liquid required.13.4 dKH (16.0 dKH @ 11PM)20dkH12.2dKH14dKH16.2dKH13.4dKH15.4 dKH12.2 dKH12.2 dKH12.2 dKH12.28.728.2DKHDKH 10.711.510.811.810.011.28.7
Magnesium mg/L (ppm)1390ppm120012001200118513351170133512151350125014251425129011701260112511801080117012301170
Calcium mg/L (ppm)465ppm390480462450438420444500410400450370400400375
Phosphate 0.03ppm0.030.030.03Below 0.030.080.080.02
CopperMain Tank: 0 Quarantine Tank: 1Main Tank: /Quarantine Tank: 0.5
 

vetteguy53081

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Hello everyone,
So I have Cyanobacteria growing in my marine tank with seahorses.
My nutrient levels are as follows:
Nitrate 0.15
KH 8.7
Magnesium 1170 (raised it today)
Calcium 375 (raised it today too)
Phosphorus 0.02

anyone know what to do ? Increase flow rate or what? As I only have the exhaust two pipes one pointing down and one up to mix the top water. I have seahorses so I didn’t buy any wave machine is it needed or is there a way to remove it ?

please let me know as my Coral has also started to bleach and not sure why as there was no temperature increase or anything like that ? My phosphates were high with nitrates but it’s is down now could this be it ? Wil it grow back or ? As the Cyanobacteria keeps growing, is there no critters that remove it as I have trochus snails, nassrius and also a Mexican snail.

thanks
Its hard to increase with seahorses who are slow swimmers and prefer lower flow rate but you are correct that it would help.
Cyano blooms typically start when water nutrient concentrations of phosphate, nitrate and other organic compounds are too high.
Some of the most common causes include:
- Protein skimmer which fills water with tiny air bubbles. As bubbles form from the reaction chamber, dissolved organic compound molecules stick to them. Foam forms at the surface of the water and is then transferred to a collection cup, where it rests as skimmate. When the protein skimmer does not output the best efficiency or you do not have the suitable protein skimmer to cover the tank, the air bubbles created by the skimmer might be insufficient. And this insufficiency of air bubbles can trigger the cyano to thrive.
- Overstocking / overfeeding, your aquarium with nutrients is often the culprit of a cyano bloom
- Adding live rock that isn’t completely cured which acts like a breeding ground for red slime algae
- If you don’t change your water with enough frequency, you’ll soon have a brightly colored red slime algae bloom. Regular water changes dilute nutrients that feed cyanobacteria and keeps your tank beautifully clear
- Using a water source with nitrates or phosphates is like rolling out the welcome mat for cyano. Tap water is an example
- Inadequate water flow, or movement, is a leading cause of cyano blooms. Slow moving water combined with excess dissolved nutrients is a recipe for pervasive red slime algae development

I recommend to reduce white light intensity or even turn them off for 4-5 days. Add liquid bacteria daily for a week during the day at 1.5ml per 10 gallons. Add Hydrogen peroxide at night at 1ml per 10 gallons. Add a pouch of chemipure blue which will balance phos and nitrate and keep them in check.

After the week, add a few snails such as cerith, margarita, astrea and nassarius plus 3-6 blue leg hermits to take control.
 

brandon429

why did you put a reef in that
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kay2443

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How old is the tank? Cyano isn't uncommon in newer setups that are lacking a bit in biodiversity and bacteria. My tiger conchs eat cyano but it usually goes away in time. You could manual remove as much as possible to help it out as well. Best of luck
I'm dealing with the same thing. Is it harmful to marine life?
 

brandon429

why did you put a reef in that
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