PRO O2 Test – a test to measure the oxygen content in water
JBL TEST PRO O2 is a set for checking oxygen content in aquariums and garden ponds, including freshwater…
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Find a productProduct description
This oxygen test set is for aquarium and garden pond owners who want to confirm that dissolved oxygen stays within the range their stock and plants need. Oxygen levels that drift outside the target can affect fish health, bacterial activity, and plant growth, and clear water does not show whether those levels are correct.
Why it matters
- All animals in an aquarium or pond need oxygen for respiration, so the oxygen level directly affects fish and other livestock.
- The bacteria that break down harmful substances depend on sufficient oxygen to keep working, which links oxygen testing to overall water stability.
- Water takes up oxygen through its surface, so higher surface circulation increases oxygen intake. In tanks with sparse planting, no plants, or marine systems, the level has to be kept balanced with technical equipment.
- When algae are dying off or several medications are being used, the manufacturer recommends raising oxygen content through aeration.
Specifications
- Brand: JBL
- Model: JBL TEST PRO O2 SET TLEN
- EAN: 4014162056986
- Weight: 0.13 kg
- Category: Exotic aquatics > Water, chemistry and tests > Water testing and meters
- Recommended oxygen content: freshwater community aquarium 5–8 mg/l; Malawi/Tanganyika lake aquarium 5–8 mg/l; planted aquascaping aquarium with few fish 5–10 mg/l; marine aquarium 5–10 mg/l; garden pond 5–10 mg/l
What it works with
The set suits freshwater community tanks, Lake Malawi and Lake Tanganyika cichlid setups, low-stocked planted aquascapes, marine aquariums, and garden ponds. Use the target range that matches your system, since the recommended values differ between freshwater community tanks (5–8 mg/l) and planted, marine, or pond setups (5–10 mg/l).
Technical specification
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Frequently asked questions
Yes. Water can look clear and still be polluted, and wrong values can lead to disease or algae. Regular checks and adjustments keep the tank or pond healthy.
The recommended range for both is 5–8 mg/l. Keeping the level stable within that range supports the well-being of the fish.
The recommended range for all three is 5–10 mg/l. In tanks with sparse planting or no plants, oxygen has to be kept balanced with technical equipment.
The beneficial bacteria that break down harmful substances depend on sufficient oxygen to do their work. Without enough oxygen, they cannot perform this function properly.
Raise the oxygen content by aeration. Water absorbs oxygen through its surface, so more surface movement means more oxygen is taken in.
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