Have a question regarding ARSTONE products? Maybe you’ll find your answer here.

What are ARSTONE backgrounds and 3D rocks made from?

All our products are made from polyurethane. It is a very high-quality and durable material which does not require any additional protective coatings. Read more about the technology.

How durable are the paints on ARSTONE aquarium backgrounds?

We use a special paint, which is exceptionally resistant both to fresh and sea water. It is also absolutely safe for fish, plants and animals. The paint will never peel off because of the peculiarities of ARSTONE production technology.

How long is the life span of ARSTONE backgrounds in aquariums and terrariums?

Our first background was installed in the tank more than 10 years ago, and it hasn’t changed so far. We give a 3 year warranty for each ARSTONE product as we stand firmly behind the quality of our products.

How much space do ARSTONE backgrounds take up inside the tank?

Our backgrounds will not take up much space in the tank. Read why. However, if you still hesitate, we recommend choosing less thick backgrounds, such as Malawi or Slimline.

Are ARSTONE 3D aquarium module rocks hollow?

Yes, all ARSTONE rocks for aquariums and terrariums are hollow and thus light weight.

Do ARSTONE aquarium rocks sink or float?

ARSTONE rocks for aquariums do float. That’s why you need to use aquarium silicone to glue them on the bottom (or/and on the sides of your tank). We do not produce sinking (heavy) rocks, because that technology is very “dirty” and pollutes the environment. Though our main concept and concern is eco-friendly decorations for tanks.

Are the aquarium rocks painted the same way as the backgrounds?

All the aquarium rocks are painted in the same way, in the same style and with the same paints as all the other ARSTONE backgrounds.

So, if you wish to order Borneo Basalt Gneiss, you can be sure that any aquarium rock modules in Basalt Gneiss will be the same colour.

Are ARSTONE backgrounds resistant to plecos fish (catfish)?

We have no information that catfish or plecos would damage our products. However, one cannot eliminate the possibility that particularly big catfish could chew anything. On the whole, the polyurethane we use to produce our backgrounds is an extremely strong material.

Can reptiles damage the background inside a terrarium?

We’ve never had any complaints about that.

Technical questions regarding installation, product specifications, etc

How should I fix a background or a rock module inside the aquarium?

We recommend silicone. Use special aquarium silicons, as all purpose silicons often contain anti-fungal additives that are dangerous for fish and plants. Read more about the installation into the aquarium tank.

How can I install a background into the tank with the glass cross pieces?

There are 2 solutions in that case:

  1. You can place the background into the tank by cutting it up with a fine saw. After that, the parts are stuck together inside the tank with aquarium silicone. You should saw the background jaggedly so that the joint was uneven and looked like a natural rock crack. The finer saw you use, the less visible seem you’ll get. You can also cut the background with a rotary power tool. This way is highly recommended for professionals.
  2. If you do not want to cut the background, you can temporarily remove the cross pieces. After the background is installed, you should place them back.

Is it possible to bend ARSTONE backgrounds and 3D rocks?

We do not recommend bending ARSTONE backgrounds as the material is solid enough for such manipulations. However our clients (usually professional aquarium stores and designers) succeeded in bowing our backgrounds with an industrial dryer (at about 600 degrees). If you still wish to bend a background by yourself, you must first partially remove the soft foam on the back of the background or make along the future bend a few deep longitudinal incisions 3-5 mm wide (by a cutter or a grinder) and only after that you can heat and bend the background. Please take into account that our company does not guarantee that the background will bend and will not break. Thus, if you decide to try it, this is completely at your own risk. We do not recommend such manipulations for amateur aquarists either.

How do you recommend cleaning the backgrounds overgrown by algae?

The best way is to drain the tank, dry it and then the dry algae can be easily removed with a stiff brush. More about cleaning…

Why do ARSTONE backgrounds often have uneven thickness?

ARSTONE backgrounds are hand-made and sometimes such deviations are possible. It’s just the peculiarities of the technology.

Your most frequently asked questions about shopping & orders.

Do you produce custom-designed backgrounds and decorations?

Yes, we produce custom products, but not always. You can request for the desired non-standard size of the backgrounds and the rocks in the catalog or you can request for a model that we do not have there.

Where can I buy your products?

You can order it at our online shop with express delivery all over the world. You can also buy the products at our dealers and distributors.

How long are ARSTONE products guaranteed for?

All ARSTONE products have a 3 year manufacturer’s guarantee which does not cover the consequential damages or normal wear & tear.

What packaging do you use?

We use the strongest five-layer cardboard boxes to guarantee safe delivery to any corner of the world. Such high quality packaging provides the possibility of multiple deliveries (Producer – Wholesaler – Retailer – Final Consumer).

If I'm a professional aquarist or if I want to sell ARSTONE products forth, are there special terms?

Yes, sure. Please contact us describing your business and your plans, we’ll make you the best dealer offer.

Need special support or custom work?

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