Formerly Tidy Hydro | Established 2013


Rhino Pro Carbon Filters

Rhino products are known for their quality and have become a favourite with all levels of grower, due to their durability, product shelf life and ease of use.

With tight packed and sealed carbon into a super efficient air flow cylinder with a vortex cone at the base with a custom pore surrounded surface for the best transference.

Made with lightweight aluminium with high porous Australian mined RC412 Carbon.

The Rhino range of products includes activated carbon filters, fans and fan controllers as well as ducting for a wide range of applications.


How long will a Rhino Pro Filter last?

Rhino carbon filters have a great lifespan of 9 to 18 months though most out perform for well over two years. Replacement carbon sleeves are available to help the filter last longer.

Whats the difference between the different types of carbon?

There are 3 types of carbon used for air filtration; Pelletized, Coconut and Granulated.

Pelletized carbon is produced by burning coal and processing it into tiny rods. These are then broken up and distributed through the filter. This method is probable the worst carbon to use in air filtration. The process of creating the pelletized carbon involves the carbon been crushed in to pencil like structures then bonding agents are added to hold the pellet together this collapses the pores structure which in turn makes the carbon less affective as the organic microbes cannot be absorbed by the carbon. Because of the small pores size of the palletized carbon it will only be re activated to about 50% or less which in turn affects the absorption rate. Also pelletized carbon contains a large percentage of ash.

Coconut carbon is produced by burning coconut fibres. This produces carbon with a greater surface area than coal but with much higher ash content and higher moisture levels. Ash is a "dead" material within the carbon and offers no benefit to the user, coconut carbon carries around 20% ash with a 5% moisture level, this high moisture level detracts from the overall adsorption of the filter. This carbon only has about a 12 month life span and is very ineffective.

Most granulated carbon is produced by burning coal but it is left unprocessed this gives you the virgin granulated carbon used in Rhino Filters. This carbon has very low ash content less than 13%. The carbon is almost magnetic to the organic compounds in air (odours).

How is carbon produced?

By burning a source material, usually coal; the remaining material after burning is carbon. The carbon is burnt is a kiln at a very high temperature but with very low oxygen content and a high moisture level.

What makes carbon good for air filtration?

Activated carbon is great for extracting organic compounds from the air. Carbon is porous and is constructed of many pores, the bigger the pore size the better the carbon will work. The pore size of RC412 is 0.02 micron which does not sound a lot but in the carbon world it is massive, this makes the carbon very absorbable to organic compounds and attracts organic compounds to the carbon particles like a magnet. The carbon is positively charged which attracts the negatively charged ions in the organic compound (i.e. smells and gases). If you placed enough of this carbon near computer or electrical equipment it would wipe all the data clear. The organic compound basically sticks to the outer edge of the carbon and then because of the pours structure it absorbs it into the centre and locks it there.

What is activated carbon?

Carbon is activated by burning it in an oxygen-depleting atmosphere. Similar to how wood smoulders in a stove when only a small amount of oxygen is present. In a kiln it is similar, but there is much less oxygen and the temperatures are much higher. When the carbon is exposed to these high temperatures in the presence of little oxygen and with excess steam, microscopic pores open up within the carbon. This creates a greater surface area and "charges" the carbon with positive electrons. Pelletized carbon can be re-activated but its efficiency drops to under 50%, The RC412 is a by product burnt coal what makes this carbon better than any other for air filtration is how it burns, some coal will not burn at the same temperature this is because of the source of the coal. Some carbon contains more impurities than others and once burnt still remains unusable for air filtration because the pours size is so small. RC412 burns at such a high temperature that when it is subjected to very low oxygen levels and activated by steam it opens the pores of the carbon and positively charges the carbon. Our 100% virgin carbon is activated in the largest carbon kiln in the southern hemisphere by Tiwest industries Tiwest ensure every batch of RC-412/RC412 carbon is pure and consistent to the highest available standards. The end result is 24 carat carbon ASTM guaranteed.

What importance does pore size have on carbon?

Pores size is very important as the bigger the pore size the easier it is for the carbon to absorb organic compounds. RC412 has a pore size of 0.02mm which is large in the carbon world. Anything under this will affect the absorption rate of the odour.

Meso pores favour 80% of our total carbon structure. It's so simple, extra large pores for extra large particles. Rhino Filters do not clog prematurely and over three years of continuous heavy usage. Meso pore carbon is as rare as 24 carat gold and about as expensive... but with Rhino Filters, we never cut corners!

What is ash content?

Ash content is the amount of "dead" material left when carbon is produced. All carbon contains some ash but as it's an inactive substance, less is better than more. Coconut for example can contain up to 20% ash, meaning it can only ever be 80% effective. Our carbon – RC412 – contains only 13% ash.

What about Carbon Purity?

As pure as gold. Rhino filters offer one of the highest fixed carbon contents per gram of any carbon on the planet with up to 90% pure carbon in every gram. Every batch of carbon is tested, refined and graded specifically for Rhino Filters by Tiwest Industries.

What is Contact Time?

Contact time is a measure of how long contaminated air needs to contact carbon for total removal of impurities. At an estimated 0.05 seconds, our carbon has one of the shortest contact times of any carbon available. All the factors discussed above contribute directly to this. This allows Rhino Filters to use less carbon than competitors and return massive reduction in overall filter weight with superior university proven results.


The Rhino Range

Rhino Filters - The Rhino Pro and Rhino Hobby are filled with the finest quality RC412 Carbon that makes it extra effective at extracting organic compounds from the air.

Rhino Fan Controllers – These dual fan controllers enable growers to create the ultimate two fan air exchange.

Rhino Ducting – The Rhino ducting range compliments the Rhino Range of products perfectly. They are manufactured to European quality standards for lasting reliability and peace of mind.

Rhino Fan – Rhino Fans are high-performance instruments for grow room ventilation. Available as single, twin and thermostatically-controlled units, this range offers a solution for every type of grower.

Rhino Products are designed and manufactured to the highest standards for both the professional and hobby grower.

The innovative and durable products that make up the Rhino range have developed a huge client base across the globe. We believe that this range is the most comprehensive on the market and that you will be satisfied by the results they provide.



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Delivery Information

We will dispatch your order as soon as possible and should normally be received within 3 to 5 working days in some cases please allow up to a maximum of 14 days. The delivery rate you pay is calculated on two things, the weight of your order and the postcode you enter. Currently we only deliver to the UK.

Delivery Rates
Weight Delivery Cost
0-5kg £3.50
5-20kg £7.50
20-30kg £15.00
30kg+ £50.00

Free shipping for orders over (Excluding bulky items) £150

Returns Policy and Procedures:

Your rights to return goods are protected under the EU distance selling directive. You are responsible for the cost and risk of damage when returning goods so postal insurance should be taken out to cover the value of the goods.

Unwanted Item(s).

If you have made a purchase form Tidy Horticulture you are entitled to cancel your order and return the goods within 7 working days for a full refund, including the cost of delivery. Notify us by telephone or email quoting the order number given and you will receive your refund within 30 days. Goods returned should be in a saleable condition and in their original packaging and with proof of purchase. Any unwanted items returned after this date will be at the discretion of management and any postage costs paid by us will be recovered.

Item(s) damaged in transit.

If your goods have been delivered by a courier and the item(s) or packaging are damaged then please sign for your delivery as ‘damaged’ and notify us by telephone or email within 48 hours. If the item(s) have been damaged in transit then you can return it to us within 30 days of receipt for a full refund or exchange.

Item(s) faulty.

If the goods delivered are faulty then you have a right to return them within 30 days. Make sure all warranty information is kept with your item. After 30 days you can also contact the manufacturer directly to enable them to rectify the problem for you. All goods must be returned in their original packaging for a full refund or exchange.


Tidy Horticulture
Unit 60 - 61
Faraday Mill Business Park
Faraday road
PL4 0st

Tel: 01752 225 225