Q&A for How to Prepare Veggies for Your Molly

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Do scraps or vegetable food increase algae in a fish tank?

Ken Colby
Saltwater Aquarist
Ken Colby is a Saltwater Aquarist and the Owner of High Tide Aquatics based in Oakland, California. With over 30 years of experience, Ken is the only local fish store owner in the United States that is certified by Humble Fish, the marine disease expert forum, as a Quarantined Fish Vendor. Ken creates in-person and online educational programming in partnership with other marine science and biology professionals. He also launched High Tide Aquatics’ YouTube channel in 2023, sharing recordings of events he’s hosted as well as "how-to" videos covering everything from coral fragging to kalkwasser dosing. He's been a member of the Bay Area Reefers club for over 19 years.

Ken Colby

Saltwater Aquarist

Expert Answer

Scraps or vegetable food in a fish tank do not directly cause problematic algae growth. The misconception often arises that high nutrient levels, such as phosphates and nitrates, lead to algae issues. However, problematic algae is primarily a result of a deficiency in herbivore predators within the aquarium. Introducing more herbivore predators to the tank is effective in controlling algae, regardless of the nutrient levels present.

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Question

Can mollies eat chopped up pieces of lettuce?

Community Answer

It is better if they don't. Choose squishier foods such as peas and squash.

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Question

Can I use Aqueon tropical flakes?

Community Answer

Those are not the best brand, but they can work. Try pellets made for mollies and sinking veggie snacks.

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Question

How do I feed them cucumber?

Landon Koski

Community Answer

Cut it into small bites, so they won't choke, and make sure it is clean and organic.

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Question

I just gave them cucumber, but they are swimming around the tank and don't see it. What can I do?

Gini Pug

Community Answer

Every fish takes time to notice where the food is. They'll see it eventually.

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