Hello! I live in the US as well so hopefully I can help you a bit more since Europe has different products over there than us.
One of the most important things is the tank. Try to find a used tank or get one on sale, it will save you a lot of money. I originally bought my gerbils a
29 gallon tank with a
10 gallon topper, and they lived in that for a year. In total, that was around $60. My tank was on sale for $29 so that saved me a lot of money. Bigger is honestly better cost wise. When they started chewing at the topper excessively, I decided to get them a new tank which I bought a few months ago. Now they live in a
55 gallon tank, that cost around $100. My advice is buy a big enough tank from the start, even though it seems like a lot at the time, it will save you money. If I had just gotten a bigger tank from the start, it would have saved me $60. You will also need a
lid. You can either buy or make a lid. I have bought every single lid I have used, mine is hinged which is super helpful as I no longer need to take off the whole lid to access my gerbils. I also use
clips to make sure it stays on but to be honest these are unnecessary.
The second thing you need is bedding. There are many types of bedding you can get. Avoid cedar and pine bedding. These are toxic to gerbils. Just for cost reference, I used a little less than one bag of paper bedding for the 29 gallon tank, and I use 2 now for my 55 gallon tank. I changed the 29 gallon tank around every 1.5 months, and I change the 55 gallon tank around every 3 months, even them I do not do a full bedding change. I recommend mixing a paper bedding with aspen and hay. I have tried 4 different brands of paper bedding. I started with
Kaytee clean and cozy. Usually this is on some sort of sale but I am using full prices for all of the costs, this bedding is $33.99 for an 85L bag. This was the softest of all of the beddings and it held burrows fairly well. I will warn you that the natural colored bedding has a warning that it is known to the state of California to cause cancer and reproductive issues. Basically everything has this warning but I would stay clear of this color of bedding. I believe it is because of the type of wood in it, the white bedding does not have this warning. Next I used
All-Living Things natural colored bedding. This is $24.99 for an 85L bag. I always prefer brown bedding since white bedding gets extremely dirty looking and colored beddings have dyes in it that I try not to use. Then I used
Pet Supplies Plus paper bedding, these pet stores aren't as common as PetCo and PetSmart but if you have one near you, it's a great store. The bedding was a little rougher than the previous options but it is a great bedding that's cheaper and comes in larger quantities. It is $42.98 for an 184L bag. The current bedding I use is
Carefresh. I was skeptical at first since it has a much rougher texture and it doesn't pack down as much. I got a coupon for a free bag (and since won a contest for 5 more bags
) To my surprise, it holds burrows better than any other bedding I have tried and it keeps hides up on the surface much better. It is $21.99 for a 60L bag but I recommend buying the twin pack if it is still available, you get 2 60L bags for $39.99, right now it is on sale for $29.99.
As for wooden beddings, like I said, don't use cedar and pine beddings. Pine is safe if it is kiln dried but I still avoid using it. I haven't tried many brands of aspen beddings but I use the
All-Living Things brand for $8.79 for a 41L bag or $17.99 for a 141L bag. Hay is another great addition to your bedding. I have used 2 different brands of hay. The Kaytee timothy hay is a bit harder and I like to use it to fill up my gerbils hay dispenser. I use the Kaytee brand, a 24oz bag is only $6.79 and it lasts quite a while. If you are adding a lot to your bedding, one container should be enough, I let my gerbils pull it out of the dispenser and do what they like with it. The Vitakraft sweet grass timothy hay is softer and better to use as a mix in for bedding. it is $6.99 for a 28oz bag. I'm pretty sure that this is the exact hay I have used but I no longer have the bag. There is one specific type of hay that is actually a grass that shouldn't be used but I will have to update on the specific type as I can't quite remember.
Toys, chews and hides are next. Gerbils need a lot of things to do so that they don't get bored. Cardboard is most gerbils favorite chews so start saving up cardboard rolls from toilet paper and your egg cartons (make sure to remove any labels.) It really depends on the person and gerbils but these are the various things that I have bought for my gerbils. Hides are very important, I have found that a clean mason jar is one of my gerbils favorites.
Coconut hides are also amazing since you can hang them to prevent them from getting buried. They are around $10 each. Most likely they will chew the ladder but as long as it isn't too high they should be able to get into it.
Cork logs are a great natural hide. They can get expensive and range between $30 and $40. Beware they can and most likely will get chewed, I still have mine after 6 months but it definitely has been chewed quite a lot. Woods are another great option. The prices range depending on the wood you buy. I have a
cholla wood from PetSmart and a
grapevine wood from Amazon. A great decoration is
wood slices, it took me quite some time but I found safe birch slices from Etsy with free shipping to the US. I got the
hay dispenser I was talking about earlier is from PetSmart, it is a bit overpriced but my gerbils love it.
A good wheel is key. You should get at least an 8 inch wheel but bigger is preferred. You can get metal, wood, and plastic wheels. Plastic wheels are most common but they can get chewed if your gerbils are plastic chewers. Wood wheels look very nice but they can be hard to clean and they get chewed even more than plastic wheels. My gerbils are on the smaller side so I have a small Niteangel wheel. The Niteangel wheel is great because you can make the wheel taller or shorter based off of your bedding height. Metal wheels are the most durable but also the most expensive.
TikTak sells metal wheels but I'm unsure if they ship to the US. You may want to build a wooden platform to keep the wheel on, Niteangel also sells
platforms made specifically for their wheels and you can get stilt extenders as well.
A sand bath is usually recommended for gerbils. Some choose to keep it in their enclosure full time, others keep it in for short periods of time. I keep mine in full time on a wooden platform. I use
childrens play sand and bake it at 350F for 30 mins and then sift the rocks out. This is a great low cost option, you can get a 50LB bag for $5 at Home Depot. I keep their sand in a
pie dish I got at Walmart for cheap and sift it every night replacing it around once a week.
Forage mixes and sprays are great for providing your gerbils with enrichment. I get am herb mix from Walmart made by Rosewood but I am currently searching for a better option. I always keep sprays for my gerbils. You can get
millet sprays and
oat sprays for cheap at PetSmart. I buy the ones for birds since you get so much more for so much cheaper than the ones made for hamsters and they are the same thing. I haven't used it but they also sell oat sprays, I bought mine on Etsy but I will try those when I run out.
Sorghum and
flax sprays are great as well but also harder to find. I bought mine from a great
Etsy shop but they were a bit pricey. Just make sure you look everything up first, this shop is made for hamsters and some things aren't safe for gerbils. I do know that the leaf mixes aren't safe for gerbils so definitely avoid those.
Food is the most important, I make my own mix but there are great options to buy as well. It cost around $40 to get all the ingredients for the food mix but I did have to buy more than I needed of most so I only have to keep buying a few ingredients and I freeze what I do not use. I use
this recipe by Fins and Whiskers. I don't know much about food mixes you can buy already made. I'm pretty sure that
Higgins Sunburst is a good option but I am not 100% sure about this.
Other things you will need is a
water bottle. I would but a glass one, when mine broke I bought a cheaper plastic one and they immediately chewed it and I had to buy yet another water bottle. I got mine from PetSmart. I hope this helps, I hope I didn't leave anything out