Active Aqua Bottom Draw Pump Adapter, AAPW250 or AAPW400, 1/2" Inlet Thread

Empty Reservoirs Completely Without Lifting Them

Getting the last few inches of water out of a heavy reservoir usually means tipping it, siphoning it, or buying a separate sump pump just for cleanup duty.

Active Aqua's Bottom Draw Pump Adapter threads onto the inline port of a compatible AAPW250 or AAPW400 submersible pump, converting it into a bottom-draw pump that pulls water from as low as 3/16" of depth.

With an adjustable lock height and a steady, leak-free flow, it turns a pump you already own into a complete drainage solution — no extra equipment, no heavy lifting.

Key Features & Benefits

• 1/2" inlet thread — is sized to fit directly onto the inline port of an AAPW250 or AAPW400 Active Aqua submersible pump.
• Draws water from as low as 3/16" depth — clears out nearly all of the remaining water in a reservoir or tank in a single pass.
• Adjustable lock height — lets you fine-tune the draw depth to match your reservoir's shape and your draining needs.
• Steady, consistent flow rate — keeps drainage predictable instead of sputtering or slowing as the water level drops.
• Leak-free seal at the threaded connection — keeps water moving through the adapter and into your line, not pooling underneath it.

Who Should Use a Bottom Draw Pump Adapter

This adapter suits any grower who already owns a compatible AAPW250 or AAPW400 Active Aqua submersible pump and wants to retire the dedicated sump pump, as well as anyone tired of lifting full reservoirs just to get the last bit of water out at changeover time.

Matching the Adapter to Your Pump

Active Aqua's bottom draw adapters are sized to the inline port thread of specific submersible pump models — this 1/2" version is built for the AAPW250 or AAPW400 pumps. Matching the adapter's thread size to your pump's port ensures a tight, leak-free seal and lets the adjustable lock height do its job of dialing in exactly how low the pump draws.

Frequently Asked Questions

Which pumps does this adapter fit?

It's threaded for a 1/2" inlet, matching the inline port on Active Aqua's AAPW250 or AAPW400 submersible pumps.

How low can it draw water from the reservoir?

It can pull water from as low as 3/16" of depth, clearing out nearly all of the remaining solution in a single pass.

Do I still need a separate sump pump for reservoir cleanup?

No — once this adapter is threaded onto a compatible pump, that pump handles bottom-draw duty on its own, so a dedicated sump pump becomes unnecessary.

Will it leak at the connection?

No — it's designed to thread on with a tight, leak-free seal, so water moves through the adapter and into your line rather than pooling underneath.

Can I adjust how close to the bottom it draws?

Yes — the adjustable lock height lets you set the draw depth to match your reservoir's shape and how completely you want it drained.