#1 Cause of GHA is (you fill in the blank)

Top Shelf Aquatics

wareagle

Member
View Badges
Joined
Mar 28, 2019
Messages
67
Reaction score
56
I don't know, but I have a QT observation tank that wont grow it, and when I put some in with a rock from my DT tank the GHA died. The QT tank only grows really bright green film algae, it's actually pretty. My DT also wont grow GHA except in really small clumps on anything new I introduce to the tank, frag racks, rocks, pumps, and plumbing, and it's always in a state of being near death because of my low phosphates. The QT tank has high nitrates 20+ppm and high phosphates .18 ppm. The DT has nitrates at 10-15 and phosphates at .03, and I dose neophos.
 

ScottR

Scott ™
View Badges
Joined
Feb 12, 2019
Messages
3,595
Reaction score
10,903
Location
Hong Kong
Having kept a bare bottom tank allows me to correct measures before they get out of hand. Having rocks covered with corals and coralline also give GHA less space to take foot.

My two cents only.
 

Ohashimz

Valuable Member
View Badges
Joined
Jan 6, 2017
Messages
2,335
Reaction score
2,197
If its GHA then its nutrients.
Some times people confused GHA with other type of algae or even bacteria like cyano.
 

ScottR

Scott ™
View Badges
Joined
Feb 12, 2019
Messages
3,595
Reaction score
10,903
Location
Hong Kong
I agree with nutrients being an issue. I run a BB which allows me to vacuum my bed when dirty without doing a WC. I also change out my filter floss every few days. I let the tank and CUC run their game. Lots of filter feeders. I skim lightly and use lots of biomedia to help keep bacterial levels high enough to break down everything. Not saying I run a perfect tank but GHA has never been an issue in my tanks.

I’ve seen tanks where this was an issue. Deep sand beds, over feeding, inadequate CUC, etc.
 

brandon429

why did you put a reef in that
View Badges
Joined
Dec 9, 2014
Messages
9,459
Reaction score
7,198
Location
tejas
the # 1 cause of gha from work threads that collect GHA cures is visually seeing it, then doing nothing.

Not a param

not a light brand, name, or source
its not a sunlight issue, my tank gets morning light and has no algae other than what I lazily allow

not even detritus which I dislike is the cause (its fine feed, though)

In nature, GHA grows where there are two ingredients, water and a reef. If animals are missing to eat it, then it grows. that's why in an aquarium you might get lucky with indirect actions, and then twenty thousand gha work threads says you wont. act when you see it

when you get real efficient, you wont be acting on it as much as the inefficient do.

when you see gha in your tank, decide if you want to be in the back seat or the front seat/driver of your investment then act (or don't) accordingly.

The #1 FALSE information ever circulated about GHA in the hobby is that its expected in a new tank, farm it on purpose, its good and normal. Its good and normal to unlimited pocketbooks, or those who want to ugly reef for like the first three years, so the rest better get to farming/doing what it takes

*those who beat gha in their own tanks like to give advice on how to beat that in other tanks :)

and that's why new threads on GHA never stops. Everybody is repeating the same info from 20 yrs ago on how to handle it (but it really just feeds it/makes more, we can see)

It takes fully different actions to run a work thread than it does to make a one off cure in a home where you are a master within those four walls. As soon as you need to make five hundred tanks algae free, your advice will change. this is the nature of work threads vs no work threads on how we learn.
 
Last edited:

ca1ore

Valuable Member
View Badges
Joined
Oct 28, 2014
Messages
8,282
Reaction score
10,975
Location
Stamford, CT
Exactly! The cause of GHA is nature. Every healthy tank contains and will grow algae …. including GHA. Proper husbandry and appropriate herbivores will ensure that it never gets out of control. I recently added a rock anemone to my tank, and the attached rock had quite a bit of GHA on it. No problem. Tang gang crowded around, inspecting the new rock, and within a few minutes all the algae was eaten.
 

brandon429

why did you put a reef in that
View Badges
Joined
Dec 9, 2014
Messages
9,459
Reaction score
7,198
Location
tejas
and cheating when required.
If you are looking at gha waving in a tank currently, then you've provided what it needs to thrive. permission.

yes to all above.

*there's another way to prevent it without any grazing at all, so combined with grazing it should be really powerful:

plate the entire system in coralline by hand over time by cleaning gha to make room and keep out the detritus from compounding in sand and in rock pores...easy to do in small containers, hard to do in big tanks. design big tanks to eject detritus, not store it.

when you let gha set in, you give it prime real estate and it becomes the excluder. make it gone, plant them in its place.

the more coralline you have the less places algae will root. Check out the places in algae challenge threads where GHA doesn't anchor.... purple resistance

coralline is a top bioexcluder of gha not from moving jaws.
# 1 is coral flesh


look at those rampant GHA work threads, where's the algae not at? In the mouth of a brain coral. Or the bubbles of a plerogyra. its never on the flesh, but algae anchors to exposed skeletal / septal areas always. we will get a pic of frag X 1000% covered in gha, but in the dead center is flesh that is 1000% never invaded. farm that part, and cheat on the other


so, pack your system with healthy corals and coralline and that alone excludes a massive portion of algae

I did my hand guiding work the first two years, opposite of the instructions from all cycling articles that say to self invade then work back. where I killed algae, I planted a large portion of living coral flesh/no trouble in that spot again/repeat x all surfaces. I haven't hand guided for gha in seven years or nine I cannot recall, no clean up crew, does not test for any param other than salinity and temp. gha is a choice based invasion no other factor matters.
 
Last edited:
World Wide Corals - Quality Aqua-cultured Coral

Eackone

Member
View Badges
Joined
Sep 3, 2018
Messages
46
Reaction score
27
Honest question:
To those referencing the lack of adequate CUC, what do you consider to be effective for GHA? I haven't had success with many critters taking on GHA and I'm trying to go Hermit-less as I recently noticed some picking at the tissue of some euphillias. Trying out only snails and other CUC members, however I'm concerned for GHA.
 

Sallstrom

Valuable Member
View Badges
Joined
Mar 14, 2017
Messages
2,216
Reaction score
8,675
Location
Gothenburg
Honest question:
To those referencing the lack of adequate CUC, what do you consider to be effective for GHA? I haven't had success with many critters taking on GHA and I'm trying to go Hermit-less as I recently noticed some picking at the tissue of some euphillias. Trying out only snails and other CUC members, however I'm concerned for GHA.
Most urchins, like black long spined, collector and tuxedo.
 

saltyhog

blowing bubbles somewhere
View Badges
Joined
Jan 2, 2014
Messages
6,743
Reaction score
16,467
Location
Conway, Arkansas
I was going to say having a salt water tank!

I agree it's going to be there in a healthy system. It can be controlled though. My nitrates are 15-20 and my PO4 0.1. I have Zero GHA in my display but lots in my overflow and refugium.

I have Gold Rim tang that's a GHA eating machine and a diverse clean up crew that keeps it that way.
 

Cthulukelele

Active Member
View Badges
Joined
Aug 20, 2018
Messages
371
Reaction score
393
Honest question:
To those referencing the lack of adequate CUC, what do you consider to be effective for GHA? I haven't had success with many critters taking on GHA and I'm trying to go Hermit-less as I recently noticed some picking at the tissue of some euphillias. Trying out only snails and other CUC members, however I'm concerned for GHA.
Lawnmower blenny, most tangs, rabbitfish, mexican turbo snails, most urchins, sea hares, lettuce nudibranchs, emerald crabs, hermit crabs (though they don't eat much)

I have experienced all of these eating large quantities of hair algae.
 
https://www.omegasea.net/

What's better food for you fish. A High Quality Frozen or High Quality Dry Food?

  • High Quality Frozen

    Votes: 109 76.8%
  • High Quality Dry

    Votes: 21 14.8%
  • Other (please post in the thread)

    Votes: 12 8.5%

Online statistics

Members online
2,016
Guests online
5,250
Total visitors
7,266
noopsyche
Top