UNS Controsoil Black

UNS Controsoil is an aquarium soil from Japan made of high quality natural soil and volcanic ash.  Proper substrate is vital for any successful aquarium, not only for the plants to flourish but also to buffer the water to optimum levels for certain fish and shrimp.  Controsoil will keep the pH of alkaline water below 7 which is ideal for keeping Caridina shrimp and most tropical fish. 

With other soil, it is common to experience algae issues during the initial month or two of a new set up.  This, “new tank syndrome” is characterized by brown or green algae on the glass, plants and hard scape as well as cloudy or smelly water.  This is caused by high levels of ammonia (NH3) which many soil manufacturers add into their products.  Although the ammonia will help cycle the tank, too much can cause problems so it is necessary for users to do daily water changes during the first few weeks of use.  Controsoil is the perfect solution for those who want good plant growth without the headache of excessive ammonia.   Many users have reported success with using Controsoil and adding shrimp or fish within 24 hours of a new set up, but we always recommend cycling the tank first and making sure ammonia and nitrites are at 0.

How much soil do I need?

Length x Width x Desired Substrate Height (in inches)

Divided by 60

= Liters of soil needed



Normal Granules ~ 5mm

Good for larger tanks (20 gallons or above) with larger plants. 

Fine Granules ~ 3mm

Perfect for smaller tanks (Less than 20 Gallons), or to use as a top coat to place on top of medium granules.  Finer soil granules help small plant roots to anchor into the substrate easier and keep from floating.

Extra Fine Granules ~ 1mm

 Perfect for smaller tanks (Less than 20 Gallons), or to use as a top coat to place on top of medium and fine granules.  Finer soil granules help small plant roots to anchor into the substrate easier and keep from floating.

$ 11.99 $ 7.99
Save $ 4.00
Substrate Size

To add this product to your wish list you must Sign In or Create an account


Because we love our plants so much and don't want to let them go, we only ship on Monday. Just kidding!

For the safety of these magical plants, we only ship Monday through Wednesday, and Friday. Orders placed after 1pm Pacific Time will be shipped the following day. 

Rimless aquariums and other hard goods will be shipped Monday through Friday via UPS Ground or freight.  When purchasing plants/livestock with any hard goods, they will sometimes be shipped separately; but don't worry, we'll be sure to keep you updated with your purchase!

Please make sure your shipping address is correct as we will not be held responsible for DOA due to an undeliverable addresses.



Hard goods can be returned up to 30 days after purchase for a full refund as long as the product is unused and new in box. We offer store credit for items that have been opened and used. Customer will have to pay for return shipping freight. 

We are unable to accept returns for perishable items such as plants or livestock.  However, feel free to reach out to us if you are unsatisfied in any way! We do provide 100% DOA (Dead On Arrival) protection.


DOA Policy

If your plants arrived DOA (Dead On Arrival), please provide a clear picture of the plants sealed in its original packaging within 12 hours of the package arrival at the shipping address. 

Send all pictures, along with your order number to info@buceplant.com or through Facebook Messenger.
During winter (under 50°F at your location), please remember to add a heat pack to your order to receive our DOA guarantee.  Orders without the purchase of a heat pack will not qualify for DOA replacements, refunds or credits.



Don’t worry, we’ll take care of your order as long as it fits within the guidelines above!


Gift Cards

We will not be able to refund gift cards for cash from the gift card receiver. However, if you purchased the gift card for someone and decide you need a refund, please contact us!

<-- -->