Ebb and flow fitting kit: black overflow and fill/drain fittings, each topped with a slotted strainer

Black polypropylene overflow for flood-and-drain systems: strainer, threaded body, locking nut and barbed outlet

Short fill-and-drain fitting through which water rises into the bed and then returns to the reservoir

Fitting strainer in position in the grow bed during flooding, with water moving around it

Fitting kit for flood table and flood-and-drain bed

Name: Fitting kit for flood table and flood-and-drain bed
Brand: Terra Aquatica
SKU: TA-KITMAREE
Price: 26.2 USD
Availability: InStock

$26.20

$8.73 × 3 with no fees Klarna.

This kit brings together the two bottom fittings for a flood-and-drain system: an overflow, which sets the water level, and a fill-and-drain fitting through which water enters and exits. Each one is topped with a strainer to hold back the grow medium.

It fits the Ebb&Grow flood table, but also a grow bed, a clay pebble media bed in an aquaponics system, or a home-built seedling table.

Ref. TA-KITMAREE·Spare part

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The summary

What you receive: two black polypropylene fittings — an overflow and a fill/drain fitting — each with its own strainer.
The principle: the pump fills the grow bed, the overflow sets the water level, then the water drains away by gravity.
Uses: flood-and-drain table, aquaponic grow bed, floodable seedling or cutting tray.
What you'll need: a drilled grow bed, a submersible pump and a timer, not included.

Overflow and strainer inlet fitting for flood tables, aquaponic grow beds and flood-and-drain systems

Every flood and drain system, also known as ebb and flow, is built on the same principle: a grow bed positioned above a water reservoir, two fittings passing through its base, and a pump controlled by a timer. This kit provides those two fittings. It is fitted as standard on the Ebb&Grow flood table, but its dimensions match the fittings found on most flood tables on the market, so you can install it on any rigid grow bed that you drill yourself.

🌊 The flood and drain principle

The cycle always follows the same sequence. The pump sends water into the tray through the inlet fitting, and the level rises around the roots until it reaches the top of the overflow, through which any excess drains back to the reservoir. When the pump stops, the water drains back by gravity through the inlet fitting, and air enters the grow medium as the level drops. The roots thus receive water and oxygen in alternation, with no valves or moving parts inside the tray.

🔩 Two fittings, two roles

The short fitting is used for filling and draining: it passes through the bottom of the tank and receives, from below, the pipe coming from your pump. The long fitting, approximately 17 cm, is the overflow: its body, formed from two interlocking sections, protrudes into the tank, and its height determines the maximum water level. If the timer gets stuck in the on position, excess water returns through it to the sump instead of spilling over. Each fitting consists of a threaded body, a lock nut, a barbed connector and a slotted strainer, all in black polypropylene, opaque to light.

Fill the bed with a fast-draining grow medium

Flood and drain works well only if water leaves the grow medium quickly. Clay pebbles of 8 to 20 mm drain almost instantly, allow air to fill the entire bed after each drain cycle, and can be cleaned between crops. The strainers included in the kit retain them in the grow bed, so no pebble enters the pipe or reaches the pump.

Drill and tighten without damaging the tank

Drill the base with a hole saw at the diameter of the threaded body, in a flat area well away from the edges, then deburr the hole so that the nut sits flush. Tighten the nut by hand, without tools, as overtightening can crack the thread. Fill the tank with clean water and check for leaks before any use with plants or fish.

Flood table

The kit replaces the fittings on the Ebb&Grow table, or fits a flood tray from another brand of the same format.

Aquaponic grow bed

It turns a bed of clay pebbles into a flood-and-drain system, fed from the fish pond.

Seedling tray

It sits in a shallow tray where seedling trays and cuttings receive water from below.

In each of these setups, the kit plays the same role, with only the size of the tank and pump varying. The water level is set by the height of the overflow, the flood duration by the timer, and the cycle frequency by the grow medium: with clay pebbles, allow 4 to 6 floods per day, and 2 to 4 with a water-retaining grow medium such as coco fibre. Adjust these settings by observing your roots during the first week.

🐟 In aquaponics

A flood-and-drain grow bed is one of the most widely used setups in aquaponics. The pump, sitting in your pond, sends the fish water up to a grow bed filled with clay pebbles placed above, and the water then returns to the pond by gravity. The bed serves a dual purpose: it supports the plants and acts as a biofilter, since the bacteria colonising the clay pebbles convert the fish's ammonia into nitrates, and each drain cycle brings them the oxygen they need.

Two precautions apply when fish are involved. The volume of water that fills the grow bed is drawn from the pond with each flood cycle: size the bed so that the drop in water level remains moderate and never exposes the pump strainer. Many aquaponic systems also use a bell siphon with a continuously running pump; this kit is designed for the timer-controlled variant, which is simpler to set up, where the pump switching off triggers the drain.

🧽 Strainer maintenance

Fine roots and particles of grow medium accumulate around the fittings, especially in aquaponics, where fish waste loads the water with organic matter. A clogged strainer slows drainage, leaving roots submerged for longer than intended. At every nutrient solution change or pond clean, remove the strainers, rinse them under clean water, then refit them before restarting the pump. The kit weighs 88 g, measures 17 x 7.5 x 4 cm, and is suitable for both indoor and outdoor use.

Technical specifications

The parts

Contents: 1 overflow and 1 fill-and-drain fitting
Filtration: A slotted strainer on each fitting
Fixing: Threaded body and locking nut
Pipe fitting connection: Barbed fitting beneath the tank

The material

Material: Black polypropylene
Footprint: 17 x 7.5 x 4 cm
Weight: 88 g
Use: Indoor and outdoor

Uses

Flood table: Ebb&Grow and trays in the same format
Aquaponics: Flood-and-drain grow bed
Home assembly: Any rigid tank drilled at the bottom
Manufacturer's reference: Terra Aquatica XXAL01025Manufactured in: China

To budget for separately

The tank: A grow bed or a flood table
The grow medium: Clay pebbles

6 further specifications are available in the detailed view.

In the box

1 overflow fitting with nut and strainer
1 fill-and-drain fitting with nut and strainer

Contents, material, dimensions, weight, origin and compatibility noted on 02/10/2026 from the manufacturer's product sheet and their 2026 price list.

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delivery time

Kit dispatched by tracked parcel from France. Exact shipping costs and final delivery times are displayed at checkout once your address has been entered. Outside the European Union, import duties and taxes are the responsibility of the recipient.

Frequently asked questions

8 questions

6 key questions, 8 in the detailed view

Is the pump included?

Can it be used with a reservoir other than the Ebb&Grow table?

Is it suitable for a grow bed in aquaponics?

What's the difference compared with a bell siphon?

Criterion	This kit	Bell siphon
Pump	Timer-controlled	Continuous
Drain trigger	Pump stops	Siphon priming
Adjustment	Simple	More involved

What is the longest fitting for?

How many flood cycles per day should be programmed?

How do you clean the strainers?

Does the kit fit the solar version of the Ebb&Grow table?

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Fitting kit for flood table and flood-and-drain bed

The summary