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Aquarino KH — User Manual · Printed from manual.aquarino.com.br/en/kh/4-where-and-how-to-install/

PART IIInstallation
CHAPTER 4

Where and how to install

4.1 Where to install

Place the Aquarino KH on a flat, dry, easily reached surface intended for electronic equipment. You will come back to this spot for maintenance — leave room to open the lid comfortably.

Avoid these four places, because all of them degrade measurement quality:

AvoidWhy
Under aquarium lighting or direct sunlightAlgae grow inside the chambers and change readings over the weeks
Near a chiller or any heat sourceA sharp temperature swing during the cycle affects accuracy
Over the water line or anywhere it gets wetThis is electronic equipment; constant splashing shortens its life
A room with no ventilation at allVery still air increases the spread between measurements
The most common mistake is placing the equipment next to the aquarium, under the same light: algae grow in the transparent reservoir. The ideal spot is inside the cabinet or somewhere without direct light; if the only available spot gets light, use the light shield.
The most common mistake is placing the equipment next to the aquarium, under the same light: algae grow in the transparent reservoir. The ideal spot is inside the cabinet or somewhere without direct light; if the only available spot gets light, use the light shield.

4.2 Connecting the sampling hose

  1. Connect the silicone hose to the Aquarino KH, on the right-hand fitting of the Tank dosing pump.
  2. Run the other end to your sump or aquarium. The sinker supplied with the hose keeps the tip submerged.
The sampling hose goes into the right-hand fitting of the Tank pump.
The sampling hose goes into the right-hand fitting of the Tank pump.
The sinker holds the hose tip steady inside the sump.
The sinker holds the hose tip steady inside the sump.

Where to leave the hose tip

Every sump has a direction of water flow: water arrives from the aquarium, passes through the chambers and goes back through the return pump. The points where something enters the system usually sit along that path — the dosing pump outlets, the reverse-osmosis top-off that makes up for evaporation, and the calcium reactor outlet. Right after these points, and close to them, the water has not yet mixed with the rest of the system.

Sump seen from above. Leave the hose tip before the dosing points, in the direction of flow, and away from them: there the water has just arrived from the aquarium and represents the system.
Sump seen from above. Leave the hose tip before the dosing points, in the direction of flow, and away from them: there the water has just arrived from the aquarium and represents the system.

So leave the hose tip before these points, in the direction of flow, and away from them, in a spot with good flow. Also avoid the bottom of the sump, where detritus settles, and the skimmer outlet: organic matter drawn into the equipment affects measurements and fouls the chambers.

Why the position changes the reading

The problem shows up only now and then, which is why it is hard to notice. If the time of a sample happens to coincide with a reverse-osmosis top-off or with a dosing pump switching on, the sample takes in water that has not yet mixed: more diluted, in the case of the top-off, or more concentrated, in the case of the buffer. That one reading falls off the curve, while the others remain normal.

Diagram, without numbers: as long as the samples fall at different times from the top-offs and dosings, the reading stays stable. When they coincide and the hose is close to the dosing point, that reading falls off the curve.
Diagram, without numbers: as long as the samples fall at different times from the top-offs and dosings, the reading stays stable. When they coincide and the hose is close to the dosing point, that reading falls off the curve.