Active Aqua Porthole Cover, Black, fits all sizes

Reservoir Access Cover for Maintenance and Evaporation Control

Leaving a reservoir's access porthole uncovered lets evaporation and airborne contaminants into the nutrient solution between maintenance checks. This porthole cover fits all Active Aqua reservoir covers, closing that gap while still allowing quick access whenever it's needed.

It lifts off easily for routine maintenance tasks, such as checking pH or adding nutrients, and its black finish matches Active Aqua reservoir cover styling.

Key Features & Benefits

• Fits All Sizes — Compatible with every Active Aqua reservoir cover size offered.
• Reduces Evaporation — Helps keep evaporation and airborne contamination out of the nutrient solution.
• Quick Access — Lifts off easily for routine maintenance tasks.
• Black Finish — Matches Active Aqua reservoir cover styling.

Who Should Use This Porthole Cover

Growers using an Active Aqua reservoir cover who want to limit evaporation and contamination while still being able to quickly check pH or add nutrients will find this porthole cover useful.

About Active Aqua

Active Aqua is a hydroponic hardware and equipment brand distributed by Hydrofarm, covering reservoirs, pumps, and grow system accessories.

Frequently Asked Questions

What does this porthole cover fit?

It fits all Active Aqua reservoir cover sizes, so growers do not need to match a specific porthole cover to each reservoir size separately. One part covers the full reservoir cover lineup.

What does the porthole cover help prevent?

It helps prevent evaporation and airborne contamination of the nutrient solution when the reservoir is not being actively accessed. Leaving a porthole open for long stretches increases both water loss and contamination risk.

How do I access the reservoir for maintenance?

Lift the porthole cover off the opening, complete the task such as checking pH or topping off nutrients, then set the cover back in place. No tools are needed since it is designed to lift off by hand.

Can I still access the reservoir for maintenance?

Yes, it lifts off easily for tasks like checking pH or adding nutrients, so covering the porthole does not slow down routine maintenance. It is meant to stay in place between checks rather than during them.

What color is this cover?

It is finished in black to match Active Aqua reservoir cover styling. That keeps the reservoir setup visually consistent across the cover and porthole cap.