Apache's Catfish Community Thread.

Media from the main tank will not be a substitute for a fishless cycle, but it will certainly help. It will be more like Paddy's progress rather than starting completely from scratch.
I know it is quite frustrating, but releasing your fish into the main tank, or asking the shop to take them back for a while, really is the safest option.
Paddy has recommended cheap ammonium and Simon has found cheaper tests. If you want to do the full range of tests the API freshwater master test kit is good, which can also be ordered on Amazon for around £23.

Why don't you have long to cycle the tank?

What are the biggest problems you feel that you are facing at the moment?

Let us know and we will help wherever we can. 

Well, the shop won't take them back since endlera are rare and if I release them into the tank the angles will eat them... I may also use this tank as a source of income so I don't have long for the  welbieng of the endlers

No problem. If it is aquarium sand it will just need rinsing in plenty of water. 
As for your tank, it is worth taking a bit of time now to ensure the set up & water quality is good so that you don't lose any of your Endlers.
I'm guessing that you got the pure breed Endlers. As most are crossed with normal guppies the pure breed ones should be easier to sell on.
I would still say that it is worth starting a fishless cycle, but then I've only been keeping fish since last October. It's worth taking the advice of the more experienced fish keepers on this forum.

  I would love to do a fishless cycle.. I just don't have the money for ammonia and tests.

It is very important to test your water, regardless of whether you are doing a fishless or fish-in cycle.
BlindDogStanley is currently going through a fish-in cycle, so it might be worth asking him how he's getting on.

If you cannot or will not afford Ammonia, why not use fish-food and allow it to rot in the tank and use that as your source of Ammonia.

Surely that would be more humane than to force healthy fish to swim in their own waste, just in order to ready the tank for others.

Fish-in cycling happens when you get bad advice from a fish shop, as I did and as happened with BlindDogStanley, but in 2016 with access to good advice there really is no excuse in choosing to undertake a fish-in cycle.

Fish-in cycling by choice is considered, rightly in my opinion, by many people as cruel.
I really couldn't ever condone it as a method of choice.

The fish in my photo is one of my dwarf puffer fish. They are adorable. I currently have 6 in a 125L species only tank. I wouldn't recommend that you consider these fish, mainly because they require consistent, excellent water quality, are very messy eaters, and are prone to things like white spot. I have also spent a small fortune on things for the tank, silk plants, real plants, bogwood, granite caves etc. as they like lots of places to hide, they can be a bit territorial and they need a lot of things to keep them interested.

Unfortunately starting most interests/hobbies that require equipment are a bit expensive.

I will try to add in the fish food but to what amount each day.

This is the problem with not using Ammonia and clearly demonstrates another reason why it's essential to be able to test for Ammonia (and later Nitrites).

Using a test kit will allow you to test the water after the food has began decomposing, and when you have a reading of 3ppm of Ammonia you know (roughly) how much food you would need to add next time.

However, as the food will take some time to break down it might be a few days before it's converted to Ammonia, and only then will you know if you'll need to add more or less next time.

This is a very imprecise way of doing it, hence why it's preferable to use Ammonia and a syringe. That way you know exactly how many millilitres of Ammonia to add each time to acheive the correct concentration.

And unless you have a test kit you'll never know at what stage you are in the cycle, and how will you know when the cycle is complete and it's safe to add fish.

Have you read the guide here?

Sue has told me that having too many kribs is bad as they will squabble. The pet shop won't take them so by using them in a fish in cycle would be ideal since it reduces the impact on the community tank and they produce more waste so there will be more bacteria.

Otinoculus would be very sad and lonely if you only had 2 so please don't buy them as it would be unkind.

I think you need to ask your Dad for some help here, if he owns a tank himself, he must have a test kit. Why don't you offer to do the washing up everyday if he gets you use his test kit?