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Big Fish 01-27-2010 03:07 PM

Aglae - Killer to Scrap off Glass! - Suggestions?
Hi, I haven't been online for a while but my 50g is flourishing.

Plants are nice, fish are happy and my staghair algae issue went away.

I am currently running with 5 hours on, 1 hour off, 5 hours on for lighting.

I am getting that spotty, green algae on the glass. It is a MAJOR pain in the butt to remove!!

I have the magnet thing I run across the glass and it removes some of it easily. However, I have to really work this to get it all off.

I have green near the substrate at the bottom of the tank and this is harder to work. I have a scraper for that but even that is a pain.

Any tricks anyone can help me with to get rid of this stuff and keep it away?

Thank you in advance.


eileen 01-27-2010 03:54 PM

Look in the Freshwater & Tropical Fish section
Under: What will eat algae, Not Plants?

Look Under Invertebrates

I posted about how to take care of this type of algae
It was in a good book I got.

Angel079 01-27-2010 04:44 PM

What's all your facts? All water parameters? What lights do you use? How many/what fish are in there? How often do you feed them all? How often & how much water change do you do?
Do you use any chems in this tank others then water conditioner?

I hear your pain!!! I just recently became attacked by like 5-6 different kinds all at one's in my brand new set up....only took about 8 weeks totally to get them ALL gone and for me to not take my tank & shotgun outside :-) So there's hope and you only have ONE to work on :-)

Byron 01-27-2010 05:55 PM

I'm not aware of anything that will eat to the point of eliminating green spot/dot algae. As Hudson's advice cited by eileen says, scrape it off.

I have previously commented that it tends to occur much less if you clean the glass every week during the pwc with a good stiff-type aquarium sponge. I do this and now and then a spot will appear, but given how it used to appear I know that my weekly cleaning of the glass is minimizing it. It also only occurs in 2 of the 4 tanks, and everything except the species of fish is identical in all four.


WisFish 01-27-2010 06:25 PM

I agree with Byron. I scrape the algae off the front and sides of the tank every 2-4 weeks. Depends on if I see any or not. I don't however scrape the back of the tank. I guess the plants are so thick that the back glass doesn't get as much algae. I have the magnet scraper but I find the hand-held sponge works better. Probably because I can control the amount of pressure I apply to the glass.

Big Fish 01-27-2010 09:07 PM

Water is within proper parameters. My filter has excess capacity.


3 grown Mollies
1 baby-growing nicely- molly

4 Sunset Platy
1-3 fry, can't quite tell as they hid in the plants

3 Red Wag PLaty

3 Siamese Algae Eaters

1 Show Guppy (the other one completely DISAPPEARED!)

7 Neon Tetras

Lots and Lots of snails

Filter: Ehiem Cannister Professional II

My plants are flourishing. I have to thin them out.

I use a plant chemical once every couple of weeks.

I have a U-SHaped Florescent tube light. I posted the specs somewhere but they seemed to have disappeared.

I feed once a day, sometimes once every two days. I like to feed the fish. When I first started, I feed 3 times a day, but really cut this back. Again, they beg, I hate seeing them beg. I try to feed them every two days. They always seem hungry.

Water is at 79F

50g Oceanic Tank

I feed flakes. I mix a bunch of different ones all together. All come from Big Al's. All Brand names in those plastic tube type packages mixed with a zip lock of Big Als food.

I cured the other Algae problem that was really HELL. This stuff just bugs me. I like CRYSTAL CLEAR glass.

The real issue is, the 1/2" or so of the green ring around the bottom of the tank. This is hard to get at because it disturbs the gravel.

Also, there is algae (a very thin coating) on the slate rocks I have in the tank and the substrate looks a bit the worse for wear. Otherwise, the rest of the tank is excellent.

Fish are happy.

I clean about 40% PWC every two weeks.


Angel079 01-27-2010 10:27 PM


Originally Posted by Big Fish (Post 314219)
Water is within proper parameters.

That means what expressed in figures for NO2, NO3, Ammonia?

Feeding 1x day or every other day is perfectly good & appropriate; no need to feel as if you were starving your fish (a healthy fish can actually go a week w/out food;-))

In your 1st post you said you had green spot alage - Are you 100% positive that's what you have...googel images for "cyanobacteria" the way you describe it now sounds more like it to me...We gotta be sure what you have there first...if I write you up a book about XYZ alage and how to treat it, when that's not even what your problem is would not help anyone :-) as almost each algae has their own "way" of developing & getting rid of it.

A w/c done weekly at 40% would be much better for the water quality;-)

Big Fish 01-28-2010 01:13 AM


Greeen Spot Algae is my best guess. It has some hard spots and other areas around it that are dusty. I am pretty certain this is what it is. It is really tough to remove from the glass with my magnet cleaner and a scraper I purchased. Most comes off, the remaining is a real pain to remove!

My rocks seem to have a film of it over them. And, again, the real eye soar to me is the band around the bottom just a finger above the gravel at the bottom of the acquarium.

I will do a water test tomorrow and post results. I have an API test kit.

I currently have a phosphate remover pad in my cannister.

I agree, a 40% weekly pwc might be the way to go. It is a lot of work. I have to carry 5g pails back and forth to the washroom to them. Pain in the butt. ;) I find my water always has a tinge to it. Slightly green in color. I atributed that to the plant fertilizer.

I let my snail population grow wild but they don't really seem to do much in the way of cleaning the glass. Lots there, but the glass still gets gungy.

Since it has been awhile since I posted a pic, I will try to get one up tomorrow. A picture is worth a 1000 words! ;)


Angel079 01-28-2010 08:17 AM

Its easy to tell the difference: Green Algae is like a green slime like coat over gravel & lower tank parts. Green dust algae forms lil green patches mostly on your glass sometimes getting as bad as you not seen through your tank any more.

It sounds to me you're dealing with both of them there - And pls correct me if I'm right or wrong.
Green Slime Algae is caused by low/no nitrates; dirty substrate & clogged filter will enhance the growth. Can initially be killed by a 3-4 blackout in which you FULLY cover the tank do not feed do not look and then do a super good vacuum cleaning to get the 'dust bunnies' out.
For this very algae it may be interesting to you to read over this one

Now Green dust / spot algae is real common in new set ups that had been exposed to no/low/swinging CO2 levels (fish stock). Again there, super clean the whole tank, scrape it all off each lil bit and reduce fert's if you're using them for a while. What get's me this is most often seen in unplanted tanks...did you already have your tank set up for a long time before adding plants just recently? How many plants would you say you have there compared to your tank size (eg 2 Sowrds only or 50% ground covered with plants...)

Big Fish 01-28-2010 02:54 PM

Picture is worth 1000 Words
3 Attachment(s)
Here are some pictures of the tank as it is Today. I can't remember when I posted my concept some time ago in another folder. You can searh it out. The plants have flourished. Hope these pictures help....I just took them with my iPhone....

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