how to Stop algae without chemicals

[bertsonic]

My tank's been overrun with algae lately, and I'm trying to avoid chemicals. Got any tips for keeping it under control naturally? I've got a 20-gallon with moderate lighting, sand substrate, and a mix of Anubias and Java Fern. Water params are good, 0 ammonia, 0 nitrite, 10 nitrate.

[greenthumb]

Reducing light exposure is key. Try cutting back to 6 hours a day and see if that helps. Also, floating plants like Frogbit can shade the tank and outcompete algae for nutrients. What's your current light schedule?

[Cubies]

I've had success with Amano shrimp and Nerite snails. They're algae-eating machines and won't mess with your plants. Just make sure your tank's well-established before adding them. How often are you doing water changes?

[bertsonic]

Thanks for the suggestions. I'm doing weekly 25% water changes. The light's on for about 8 hours right now, so I'll try reducing it. Never thought about floating plants, gonna look into Frogbit.

[Keldor]

Algae thrives on excess nutrients. Overfeeding can be a big contributor. Are you feeding your fish more than they can eat in a couple minutes? Also, consider adding more fast-growing plants like Hornwort to soak up extra nutrients.

[zenwave9]

Algae thrives on excess nutrients. Overfeeding can be a big contributor. Are you feeding your fish more than they can eat in a couple minutes? Also, consider adding more fast-growing plants like Hornwort to soak up extra nutrients.

That's solid advice. I'd also recommend checking your phosphate levels. High phosphates can fuel algae growth even if nitrates are low.

[greenthumb]

Another trick is to manually remove as much algae as you can during water changes. Use a toothbrush for stubborn spots on hardscape. It's tedious but effective. How's the flow in your tank? Poor circulation can create dead zones where algae thrives.

[Cubies]

Another trick is to manually remove as much algae as you can during water changes. Use a toothbrush for stubborn spots on hardscape. It's tedious but effective. How's the flow in your tank? Poor circulation can create dead zones where algae thrives.

Yep, flow's crucial. I run a small powerhead in my 20-gallon to keep things moving. Also, blackout treatments can help if the algae's really bad. Just cover the tank for 3 days, no light at all.

[bertsonic]

I'll try the toothbrush trick and look into flow. Got a HOB filter but maybe it's not enough. Appreciate all the help, gonna start with less light and less food.