junglejuice
Bluelight Crew
btw...beautiful tanks!
All your corals and fish look very happy.

All your corals and fish look very happy.

Blue_Phlame said:Here's a question:
After I came back from my 6 week long trip from Europe, my tank had plenty of algae growing everywhere (Perhaps I set the light-timer to stay on for too long.) But my question is, what would be the best way to remove the algae that seems to be caked on the walls of the tank/lava rock?
I tried using the abrasive side of a dish washing sponge, but it seemed to be rock hard.
I had an infestation of snails that looked like they were eating away at the algae, but their population has mysteriously disappeared.
edit: moar questions.
How often do you clean your tank? How often do you change the rocks/gravel/sand? How many hours of light would be ideal for tropical freshwater fish like mine? Is a rapid build-up of algae a sign of something wrong?
junglejuice said:Well...there are a few factors that contribute to algae growth
-overfeeding, leading to excess nutrients such as nitrates
-lighting...how much, how long? Any natural light?
-water chemistry parameters such as phosphates, etc (more advanced)
Your tank sounds like a mess and once you get it clean, it'll be fine as long as you keep up with it in terms of maintenance.
To clean the glass of stubborn algae:
Go to home depot or the equivalent and get yourself some straight razor blades. This works great on removing ANYTHING from glass...even marker or spraypaint. When using one of these blades just be careful to not slice the silicone at the seams. That could cause your tank to leak. Razor blades are great. Don't use a kitchen sponge! Many times those have detergents, soaps and chemicals in them. Get an algae scrubber pad from your LFS, that's what they are meant for.
To clean the gravel of stubborn algae:
Your gravel is what holds the vast majority of your beneficial bacteria. You don't want to replace it unless absolutely necessary. If your gravel is all covered with algae, just stir it up. When algae cant get light, it dies. Stir the clean gravel up to the top of the gravel bed.
To clean larger rocks:
I'm guessing you have some large chunks of lava rock and other things as decorations. These can be a pain to clean, but try this easy way. Take all your rocks, ornaments and artificial plants, but NOT your gravel, and pile it all into a large sink or your tub. Hose everything off to remove debris. Then fill the basin with hot water, enough to cover everything. Then add bleach at about a 5% ratio to the water. Trust me on this, it works. Let it sit for a few hours, drain, and then spray everything off with the showerhead/sink sprayer. This will knock off a lot of loosened algae. Rebleach if needed. When you are done, spread these items out (if they are arranged in a bathtub, thats cool) and let them dry until you don't smell bleach on them anymore. Then cover them with water one more time, and this time add dechlorinator to remove any traces of bleach (bleach = chlorine). For the truly cautious, let em dry out one more time. Just make sure that you smell no bleach.
So...
Don't replace the stones or gravel unless completely necessary. Usually they can just be cleaned. I do water changes about once ever 3-4 weeks in my tanks, no more than 50% at a time.
To clean this tank up-
-Thoroughly wipe down the insides of the tank, scraping off the algae into the water
-Remove all decorations you wish to bleach.
-Stir up the gravel as much as possible
-Siphon out a lot of water, trying to get as much algae, debris and shit out.
-Fill tank back up with 78˚f, dechlorinated water
-Put in plants/decorations once they are ready.
If you haven't done a water change in a long time, chances are that your pH has become very acidic. The fish are probably used to it if that is the case. The problem comes in with the water change. If you knock the pH up via 2 points, that's a big difference and can lead to fish stress or death. Not to scare you, just to suggest that you test your pH before you undertake this project.
Your tank should get about 10 hours of light a day, and preferably no natural light. This will help to cut down on algae growth. Also don't overfeed, and consider adding an algae eater such as a plecostomus. They do a great job.
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