Frequently Asked Questions

Here are answers to some of our most frequently asked questions! If you don't see what you're looking for, feel free to reach out to our team.

Do you ship internationally?

Unfortunately, we do not offer international shipping. We ship within the United States and its territories, with the exception of Hawaii.

When will a plant be back in stock?

We typically restock our plants once a week, between Wednesday and Friday.

If the plant you're looking for is out of stock, you can sign up for restock notifications directly on its product page. We'll send you an email when it's back!

Can I combine multiple discount codes?

Unfortunately, no. Our website only allows one discount code per order.

Please make sure to apply your discount code before completing checkout, as discounts cannot be added after an order has been placed.

Where is H2O located?

We operate out of Ohio and are an online only retailer. We do not have a physical storefront open to the public.

Can I cancel my order?

If you need to cancel your order, please contact our team.

Please note that all customer-initiated order cancellations are charged a 15% cancellation fee.

If you need to delay your shipment due to tank issues or other concerns, please reach out to us! We may be able to hold your order or adjust your shipping date instead of canceling it.

For more information, please review our Shipping Policy

Do I need CO2 to grow your aquarium plants?

Generally, no! Most of the aquarium plants we sell do not require additional CO2 to grow successfully.

However, some plants benefit from or require CO2 supplementation to thrive. We recommend checking each plant's product description for its specific care requirements.

Can your plants introduce snails, algae, duckweed, or other pests into my aquarium?

Because our plants are grown and maintained in aquatic environments, there is always a possibility that they may carry hitchhikers such as snails, algae, duckweed, or other unwanted organisms.

While we take care in preparing our plants for shipment, we cannot guarantee that plants will be completely free of hitchhikers.

We include plant cleaning instructions with every order to help reduce the risk of introducing unwanted organisms into your aquarium.

We also recommend watching this Plant Cleaning Guide for additional information on how to clean your plants before adding them to your tank.