JBL GH Test

£11.49
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GH liquid test.

JBL GH Test

Healthy aquarium/healthy pond with conditions close to nature
The right water values are dependent on the fish stock and the plants in the aquarium/pond. Even if the water looks clear it can be contaminated. With bad values, diseases or algae can appear in the aquarium/pond. To maintain a healthy aquarium/pond with conditions close to nature it is important to check and adapt the water values regularly.

For each water analysis, JBL provides water tests in the form of quick tests or colour change tests. These determine a certain value or several values in one go. With these water tests, you can recognise algae problems and negative nitrate, nitrite, potassium, magnesium values etc.

Why test?
Depending on the origin and consistency of the subsoil, water may contain varying quantities of alkaline earth salts, usually in the form of calcium and magnesium salts. General hardness, by definition, is the sum of calcium and magnesium ions suspended in the water. Most fish and plants thrive well at a general hardness of between roughly 8 and 20°dH. Excessive total hardness values, should, however, be counteracted by the appropriate measures.

JBL Online Laboratory
Regular control for a healthy aquarium/pond with conditions close to nature. Enter your water values into the JBL Online Laboratory and get an in-depth analysis of your values within seconds.

Recommended general hardness values:
Freshwater aquarium (community aquarium): 8-25 °dGH
Lake Malawi/Lake Tanganyika aquarium: 5-20 °dGH
Plant aquarium with few fish (aquascaping): 3-10 °dGH
Marine aquarium: not measurable with the GH test because of GH too high. Please test calcium and magnesium separately
Pond: 6-20 °dGH

  • Simple and reliable control of water values in ponds/aquariums. Determines the ideal total hardness for freshwater aquariums and ponds
  • Colour change test: fill plastic cuvette with sample water, add reagent drop by drop until colour changes from red to green. Number of drops = level of GH (total hardness)
  • When to use: for setting up a new aquarium: once a week
  • Online Laboratory: regular control for a healthy aquarium/pond with conditions close to nature. JBL has water tests in the form of quick tests or colour change tests for every water analysis. Testing aquarium water for healthy, clear water
  • Package contents: 1 quick test, GH Test. Incl. reagent and plastic vial. Refill reagent available separately

Delivery costs for your order will be calculated during the checkout process using your designated delivery address and chosen delivery method. You will only pay one delivery charge for your order and this will be calculated on your entire basket after you have entered your delivery address. If for any reason your products are not deliverable to your chosen delivery address, the checkout will inform you of this before your order is submitted.

Our chosen couriers are DPD and Royal Mail. If an order is dispatched directly from a manufacturer then you may have a different courier delivering your order. Full tracking details for all orders sent by DPD will be provided when your order is shipped. You can choose ‘Express Courier’ to receive this service on any standard order. Any order sent from our suppliers, or with DPD will only be delivered Monday - Friday.

All stated delivery times begin from the moment your order is accepted which is when your order is shipped from our warehouse our suppliers. An order confirmation email is not the acceptance of an order by us.

A signature is required for all orders sent via DPD, at which point the responsibility for all consignments passes to you. If you have specified another recipient (who is not you) for delivery purposes, then you accept that evidence of a signature by the said recipient (or another appointed person) at your delivery address is evidence of delivery and fulfilment by DPD and this accepts the transfer of responsibility to yourself.  

We do not ship orders internationally.

To see a full list of our delivery charges and to read our terms and conditions, click here.

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