Algae problem in one of my tanks?

I actually don't think it's dangerously overstocked, maybe slightly....Is the algae growing on the sides or is it free-floating algae?

Sunlight can cause algae growth or having lamps/lights on near the tank. Are there any lamps near the tank or in the same room as the tank that are on for hours a day? If so, try to cut back on the light usage.

Have you had the water tested for phosphate? I don't know where you live, but in certain areas, usually near a mountain range, the phosphate level in tap water is fairly high, not dangerously so for the fish. The problem is phosphate provides ample nutrient for algae growth, and thus results in large amounts of algae. If your tap water is high in phosphate, the water changes are actually fueling the algae growth. Try going to a local pet store and asking if they do phosphate testing. I know my local PetSmart does, but only if you ask for phosphate testing specifically, rather than just water testing.

Another problem can be too much oxygen. I notice you said you had a 30 gallon filter and an aerator, which seems like too much, because the filter should be strong enough to handle aerating the tank and filtering it. Maybe try taking the aerator out for a week or two and see if it makes a difference, doing the regular water changes of course.

Also, while clearing out the algae problem, I know you said you don't overfeed them, but if you can safely feed them as little as possible while trying to clear out the problem, it would help.

I know the chemicals like AlgaeFix do NOT work, nor are they safe, so try to stay away from them. Algae is best dealt with naturally.

Aside from that, I really can't think of anything else you could correct to fix the problem. If none of the suggestions you got from me or other people work, try calling a local mom and pop pet store (they usually know more information) and ask them what they suggestion.

As for the shrimp, that is actually a great idea. You might have a problem with the Gourami, though. Not too sure. But provide ample hiding places and buy more shrimp than you actually want, in case your gourami has himself a snack. lol Ghost shrimp would probably be the best as the transparent body makes them less of a target because other fish can rarely see them. lol I have a few ghost shrimp and they are scavengers and also awesome, altogether.

Good luck, and sorry I'm so long-winded. lol I just noticed very few comments gave a wide range of possibilities for algae control. ;) So good luck!

The algae need need both light and nutrients to grow. Unfortunately, they are getting plenty of nutrients from the waste generated by those 5 goldfish in that small tank. I know you don't want to hear a lecture on overstocking, but more fish basically means more fertilizer for the algae, and goldfish are big waste generators. Instead of doing 25-50% water changes weekly, try to do that same amount twice weekly. Water changes are the best way to reduce any nutrient build up. Also, check your phosphate level. Phosphates can enter your water from food fed to the fish or even from the water source you use for your water changes, and they also fuel algae growth. If you have phosphate present in the water, I would consider buying one of the phosphate removers that can be added to your filter from your LFS. How long do you leave the aquarium lights on for? keeping the lighting to a minimum (no more than a couple of hours a day) will help with the algae problem. The fish will get enough light from the room lighting to go about their buisness. Good luck, and please consider getting a larger tank for those goldfish in the future.

Algae is led to by 2 issues: -way over sunshine -way over bioload Algae is a type of plant, the main elementary type, in actuality. you're able to do some issues: shrink easy by: -Leaving the sunshine on for fewer hours of the day (8 max) -overlaying the sides with black paper -Taking the aquarium remote from the window shrink the bioload by: -Feeding your fish much less (in case you feed them every day, change to the different day or three times each and every week) -Upping your weekly water adjustments (say, from 20% to 30%, etc.) -in case you employ fertilizer to feed your flowers, end. -you assert "super fish tank," what length is it, precisely, and how plenty fish? it must be an overstocked tank. you are able to shrink it to suited stocking tiers. i think of that the suitable possible element so which you would be able to do is upload extra stay flowers. they're going to consume up the nitrates of your gadget in the previous the algae does, ravenous the algae out. Getting an algae eater provides to the bioload, added fueling the algae to enhance. it won't help. Or, you are able to settle for the algae and take care of it as yet another plant. Fish do not concepts algae in any respect. it fairly is purely us people who concepts it.

First, make sure it is not in direct sunlight.

Change water 20% every day until clean.

There are also products that help destroy algae, and don't harm your fish.

Also, make sure you clean the gravel, this will help.

sounds like a nice tank but if you are getting to much light then this might be your problem make more water changes to i had this happen with my 30 gallon good luck