Is This Algae?

Freedom

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I've had 6 rocks sitting in a jar of water from the tank.  Trying to grow some algae for the otos.
 
Is this what I should have?  This long translucent wavey thing?  I put the rock in the tank, should I remove it?
 
 
 

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That does not look like algae because mine looks a lot greener and it isn't the shape of yours but a big blotch somewhere around the tank I recommend you look at some pictures.
 
That could be a mold? or some sort of fungus, definitely remove it though.
 
Why don't you try some java moss or moss bals that provide some algae and soon because if these things it will cause algae to grow in your tank! I don't know where you can get algae from because my friend got me some but I don't know where from
 
Actually java and marimo moss will lower the amount of algae that grows because they take the nutrients from them. Marimo moss ball is actually a form of algae but grows in balanced conditions and isnt seen as a snack. If you like to grow algae get a good florescent bulb and leave on the lights for about 12 hours a day.
 
I`ve heard of people putting rocks in containers with water near windows where they get sun, so they`d grow algae. I`ve supplemented my algae eaters with blanched zucchini. May be worth a try, though Otos may need some time seeing zucchini as a food source!
 
I do use blanched zuke, the oto makes use of that regularly.  I also use algae wafers.  Blanched cuke.  I tried blanched edamame (shelled) but he never went near that.
 
 I had tried the growing on rocks in the jar, which is how I got the weird looking thing initially.  No success 'growing' algae, the jar is now washed (bleached) and back in the cupboard, the rocks also cleaned up again, and sitting waiting for me to figure out what to do with them. 
 
Found this article, maybe you want to give it another try: 
 
Algae-covered rocks: The simplest aquatic plants are algae, and the simplest food plant setup for your fish is algae-covered rocks. All you have to do is to put some rocks in water in a container separate from the main aquarium, and set them where they get sun all day long. When they become covered with algae, which usually takes a week or two, put them in the aquarium, and put some new rocks in the water in the sun. As the fish in the aquarium consume the algae on the rocks, rotate in new ones. All fish really appreciate this unending source of food plants, especially the algae-grazing cichlid fish from the African lakes.
taken from here: http://www.fishchannel.com/freshwater-aquariums/fish-food/plants-as-fish-snacks.aspx
 
This site mentions it too: http://www.aquaticcommunity.com/catfish/otocat.php
 
Yep, that is what I did.  What I got was YUCK, not algae, ha ha haaa. 
 
Hmmm, I wonder if that slimey algae was just the stuff that sometimes appears in new aquariums, and the algae you are after would have started growing soon after. Sorry I could not help better, I've never tried it myself.  
 

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