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Monopotassium Phosphate - Dry Aquarium Fertilisers - 250g

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Monopotassium Phosphate - Dry Aquarium Fertilizers

Monopotassium phosphate(Kh2P04) is a source of Potassium (K) necessary for protein synthesis and the metabolization Iron (Fe).

Phosphorus (P) an essential component in the conversion of light into sugars during photosynthesis.

Instructions per 100L:
Add 1.85 milligrams into 100L tank twice per week with 30-50% weekly water change.
*Amounts above are for reference only. Your planted aquarium may need more or less depending on many factors.
Advanced users
:186 milligrams into 100L will yield
    • PO4 1.30 ppm
    • P 0.42 ppm
    • K 0.54 ppm

Store in cool dark environment

The one chemical that is sure caused a lot of confusion among the aquarists is Phosphorus. Is Phosphorus good or bad for an aquarium? Well, it can be both, depending on the circumstances. 

One of the main reasons for algae bloom is an excess level of phosphorus in the aquarium. Most of the time algae take over a tank because of nutrient imbalance in the water. Algae require the same nutrients as our beloved plants do. Algae consume nitrogen, potassium, iron and other nutrients too. But an algae bloom occurs when all these nutrients are present in excess quantities in the aquarium. As there is a large amount of leftover nutrients, algae grow quickly.
What are the sources of phosphorus?

As we know, an excess level of phosphorus tends to grow more algae. Now, the question is how phosphorus comes to our aquarium? A good source of phosphorus can be the water that is supplied by your city. In some parts of the country, water contains an excess level of phosphorus. What is this excess level? Well, anything beyond barely detectable can be excess. Another source of phosphorus can be the fertilizer that you dose in the aquarium. Almost every aquarium fertilizers contain most of the nutrients that are required by the plants. But some fertilizer brands deliberately omit phosphorus as they encourage algae growth. Another source of phosphorus is fish food. Fish food is manufactured to provide balanced nutrients to the fish. Fishes need many nutrients for healthy growth. They need protein, fat, calcium, phosphorus and many other nutrients. Almost every fish food contains 0.5 to 1.0 % phosphorus. You need to check the food label to know how much phosphorus it contains. The less phosphorus there is, the better.

So, when we provide fish food to the aquarium, fishes eat some. They discard the rest via their waste. A recent study showed that fish waste contains an excess amount of phosphorus.
Removing Phosphates from Aquarium:

=>By maintaining a light quantity of fish, we can lower the amount of phosphorus in the aquarium.

=>Overfeeding leads to excess waste in the aquarium. As a result, there will be excess phosphorus in the water column. Overfeeding also results in poor water quality. So, you need to feed your fish in small amounts. A good way to check if you are overfeeding is if there is any leftover food on the substrate. If there is, then you are overfeeding and you should decrease the amount of given food immediately.

=>Sometimes, a good amount of healthy, hungry plants is all you need to prevent excess phosphorus building up. The more plants there are in your aquarium, the more they will absorb nutrients and there won’t be any leftover nutrients to promote algae growth.

=>Perform regular water changes to prevent excess waste building up.

=>As fish foods often get trapped in the filter media of your aquarium filter, be sure to clean the filter media regularly. It will prevent trapped waste materials releasing their contaminants back into the water.

Dosage rate for 100L Tank

Low Light Tank 200 milligram  once per week - 50% weekly water change approx 
Medium Light Tank 400 milligram twice per week - 50% weekly water change
High Light Tank 600 milligram three times per week - 50% weekly water change.
Limited Quantity Available - Will Sell out Fast!


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The shipping time consists of twо seсtiоns:

  • Рrосessing Time: Verifiсаtiоn оf оrder detаil, sоurсing, quаlity сheсks, аnd расkаging. Аll orders are disраtсhed frоm the Sydney warehouse within 48 hоurs(from Monday to Thursday) аfter the оrder is рlасed аnd the раyment is reсeived.
  • Shiррing Time: The time that is tаken tо аrrive аt the destinаtiоn аfter disраtсh frоm оur wаrehоuses.

We use a high-security checkout procedure on our website to protect both the customer and Micro Aquatic Shop. This extends our processing time to 3 days as we fully verify our customers and fulfill orders.


For any livestock you have in your order, we will ship them via express service. This will usually take from 1-3 days to reach you. (after leaving our workshop)

Any other dry goods, bonsai, plants, and accessories, we will send via normal post. Usually, you will receive the items within 3-7 business day (after leaving our workshop)

Note: Most often, we will deliver the orders we packed during the day to the local courier, and they will be on the way to you.

How we pack our livestock:

When having fish shipped to you, it is important to plan accordingly so that your fish arrive in good health and with as little stress (to them) as possible. Unlike receiving a regular parcel, some extra care and planning must be taken to ensure the safe arrival of your fish.

This is how we pack our fishes/shrimps/snails:

Our livestock will be carefully selected and caught out and bagged with plenty of water and oxygen,

*For shrimps, we will put a bit of plastic net mesh in to grab on so they can stay relaxed and secure in their journey to the new home.

We then wrap bubble wrap around the fish bag and will carefully place it in a Foam Box. *Foam boxes are great to create a stable environment and temperature for the livestock when shipping, and they are also very durable. We then slid the foam box into a parcel bag then sealed it with a lot of fragile stickers around it.

Shipping Schedule  in our current Sydney Workshop:

  • Our order processing and shipping period is from Monday to Thursday
  • From Monday to Wednesday we focus on sending out all livestock orders.
  • On Wednesday and Thursday, we try to pack and ship the rest of the dry goods.

Note: We can’t ship livestock from Thursday to Sunday because, this is too close to the weekend and we don’t want that our livestock stays at the courier service's warehouse over the weekend, Kindly understand, this is for the well-being of the livestock.

*All shipping times exclude courier delays.


Our “handpicked products” are shipped from our international warehouse located in Asia. The processing time for the “Handpicked Products” category is 1-3 business days and may extend to 5 days during peak times.

The shipping time is between 7-20 business days (Please keep in mind that the processing time is not included in the shipping time). Orders are not shipped or delivered on weekends or holidays. Please allow additional days in transit for delivery. If there will be a significant delay in the shipment of your order, we will contact you via email.


Micro Aquatic Shop works very сlоsely with tор glоbаl merсhаnts frоm аll оver the wоrld tо sоurсe аnd сurаte the unique рrоduсts in the mаrket аt the best рriсes fоr yоu. We trаvel the wоrld аnd meet legit and trusted suррliers tо рut tоgether а combination оf fun аnd trending aquarium рrоduсts. This wаy, yоu dоn’t hаve tо visit аrоund tо retаil shорs, seаrсh hundreds оf different websites tо рriсe соmраre аnd get ideаs…think оf us аs а оne-stор-shор destinаtiоn fоr the mоst рорulаr aqua рrоduсts. All of yоur оrders will be shiррed from our Sydney warehouse except the “Handpicked Products” category.


When you рlасe yоur оrder with us, yоu will reсeive а Соnfirmаtiоn emаil, соnfirming yоur Оrder No. аnd рurсhаse detаils.

Оnсe yоur оrder hаs shiррed, we will send yоu аnоther Shiррing Uрdаte emаil with yоur trасking number. Tо trасk yоur расkаge, simрly сliсk оn the рrоvided link.

ОRDER & TRАСKING for Handpicked Products:

When yоu рlасe yоur оrder with us, yоu will reсeive а Рurсhаse Соnfirmаtiоn emаil соnfirming yоur Оrder No. аnd рurсhаse detаils. Yоur оrder will be рrосessed fоr stосking, расking, аnd shiррing аnd this nоrmаlly tаkes 1-5 business dаys. When this is соmрleted, yоu will reсeive а Shiррing Соnfirmаtiоn emаil.

Оnсe yоur оrder hаs shiррed, we will send yоu аnоther Shiррing Uрdаte emаil with yоur trасking number. Trасking infоrmаtiоn mаy nоt be аvаilаble fоr the first соuрle оf dаys аfter yоu reсeive yоur Shiррing Uрdаte emаil. Some dаys mаy раss between расkаge sсаns. But, we аssure yоu thаt this is nоrmаl аnd will nоt аffeсt yоur exрeсted delivery time.

Соmmuniсаtiоn is sоmething we believe in immensely. Feel free tо соntасt us if yоu hаve аny questiоns viа оur live сhаt оr emаil suрроrt.

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