Freshwater & Marine
The word, "Optimus" in Latin translates to "the best".
NT Labs Optimus detoxifies ammonia, nitrite, nitrate, & heavy metals. It is also a concentrated aquarium water dechlorinator & conditioner.
“They’re great additions to the already impressive NT Labs line-up and deserve a place in the arsenal of every aquarist.” - PFK

10ml, 100ml, 250ml & 500ml
Let us calculate your dosage for you!
To make the process of using our products even easier this handy dosage calculator tells you the amount you will need to put into your system. Please ensure you also read the instructions and warnings that are written on the bottle/pack label.
Note: This calculator does not take into account water displacement such as that caused by substrate, ornaments, water features and plants etc. Therefore, please adjust the calculated volume accordingly.
I know my system's measurements and want to:
Calculate my volume
You’ll require*
0
ml
1 capful is approximately 5ml. For smaller volumes, each cap thread is approximately 1ml.
Add 5ml per 200L of new water.
A half dose should be used when water temperature is +30°C and chlorine and ammonia levels are low. The normal dose can be doubled for water containing exceptionally high chloramine. Optimus can be used up to 5 times normal dosage to detoxify nitrite in an emergency.
*Always follow the instructions on the label. This calculator is intended to be used only as a guide to how much product you need to buy to treat your system. It does not account for displacement caused by gravel, rocks, ornaments, or any other objects in the tank, and does not include the volume of any external filtration system. The result assumes the aquarium/pond is filled to the brim. NT Laboratories Ltd. will not accept any responsibility for inaccuracies or misuse of this guide.