Since I need to measure small amounts as precisely as possible in my nano cube, I find the measuring cup super practical.
I can now get to the fertilizer with my 1ml syringe, and the rest in the bottle is also protected from contamination by the syringe.

You simply need this thing.
Plus, for this price it really lasts forever.
I only bought new ones as a backup, the first ones have lasted for 2 years.

Using this for the first time and it works quite well . Just squeeze the bottle and it fills up. Highly recommend .

The measuring cup makes dosing child's play, no more annoying searching for a suitable measuring cup. Adding it to the water is just as problem-free and clean. I'll order another one with my next order.

great tool, simple and exact ! Precise dosing is no problem anymore with it. These measuring cups are definitely very useful

I'm very satisfied with the dosing caps!
They make dosing fertilizer quick and easy.
The value for money is unbeatable too

I bought three measuring cups right away and can absolutely recommend them. You can read off the amount easily and conveniently in 5 ml steps up to 20 ml, no dripping or spilling when pouring, and they fit the 1 l bottles perfectly.

The measuring cup fits the 500 ml bottle perfectly and is practical to use. Unfortunately, when filling the measuring cup to 20 ml, a bit always flows back, so you have to keep up the pressure on the bottle to measure out 20 ml. I would also find it easier if the markings weren't only embossed in 5 ml steps.

Applying just the right force to squeeze exactly the right amount out of the bottle takes a bit of practice. Because what's out is out. With a little finesse, though, you can fill even large amounts very precisely. It fit my 1000 ml AR bottle perfectly.

I replaced the dosing pumps with the measuring cups. Dosing is super fast and has another advantage. I prepare all fertilizers by squeezing the daily dose into the measuring cup on each bottle. Since I don't want to pour all the components in at once, I set the bottles aside for the time being, and I can't possibly forget what I've already added.
Only drawback:
When I want to dose 20 ml, the bottle sucks a few ml back in when it relaxes. But then, if it should be 60 ml, for example, I just don't give 3 x 20 ml but 4 x 15. Until I noticed this, though, I've certainly under-dosed a few times.

Great for dosing in a larger tank, simply screwed onto the fertilizer bottle. No more spilling. Highly recommend the dosing cup

A measuring cup that has no equal, it's the best measuring cup you could wish for.

Just kidding, what is there to say about it. Good quality

A must for larger tanks. No more endless pumping or drawing it all up with a syringe, just squeeze the bottle once up to the desired amount and then into the tank with it.

Just right for my 240 l aquarium. Recommended for adding larger amounts of fertilizer. Value for money is unbeatable anyway. A clear purchase recommendation from my side

The way it works is great, especially for dosing in large tanks.
Press down and it flows. The workmanship of the lid is great too.

Just screw it onto the fertilizer bottles instead of the red screw cap - done. The bottle still stays absolutely tightly sealed and doesn't draw in air, and with one squeeze you can dose cleanly between 5 ml and 30 ml. You save yourself the annoying decanting into a measuring cup. I will definitely reorder!

One squeeze of the bottle fills the measuring cup - no syringes. There's also a lid to protect the fertilizer from dust/air.

Easy handling, fits wonderfully on the 1 liter bottle - put it on, screw it tight and done. Apply light pressure to the bottle walls, the small measuring cup fills up and the fertilizer can be added to the tank without splashing or spilling, then close the lid and the bottle can be put back.

I was really surprised that you can screw the measuring cup onto the bottle. I had assumed it was a simple measuring cup.

After attaching the measuring cup, you can simply pump the fertilizer/liquid into it by squeezing.

The tube for withdrawal is a bit too long. Had to cut off 1 cm first so that it would fit. Otherwise the thing is very good!

I didn't feel like adding fertilizer amounts of 10ml to the tank with 10 pumps, so I ordered these dosing cups! Just like the pumps, a great price! The closure is a bit wobbly, but at 1€ you can easily keep a spare cup in stock!

Very practical for dosing when you need larger amounts at once. It saves you the annoying pumping. Great thing.

I used to always dose with syringes, then I ordered this nifty thing and actually expected a measuring cup that I fill by pouring, but no! It gets screwed onto the bottle and can be filled by simply squeezing. I wonder how many hours of work I'll save over the year. In any case, a lot of mess from filling the syringes is gone.

Works, does what it's supposed to.
Unfortunately I can't get it screwed onto the bottle 100% properly. That's why I have to deduct one star.

For dosing in my 180 l tank, very good for the Flowgrow fertilizer so you don't get splashes everywhere from the pump.

The scale is divided into 5 ml steps. In my opinion usable for tanks from 500 liters. If I assume iron fertilization of 1 ml per 100 liters.

For smaller amounts I fill it and draw the ml I need for my aquariums out of it with a syringe (with an attached cannula that I got myself). Great product.

Very useful for easy and quick dosing. An even slightly larger version for use in large tanks would be ideal.

the Aqua Rebell measuring cup is a sensible addition if you use Aqua Rebell fertilizer - it allows easy dosing of the fertilizer!

Since I top up 20ml daily from the fertilizer bottle I use, this little plastic part is very practical and time-saving. Just press on the bottle until the desired amount is in the cap and done.

Larger amounts of liquid fertilizer are very easy to measure, but after a certain time (approx. 1 year) the measuring cups no longer sit cleanly on the bottle and sit crooked. This makes the bottle slightly leaky in the closure area.

Overall I'm very satisfied with the product, but unfortunately it's not designed for very small amounts such as 2 ml.
It would be nice if one day you could pay with American Express 👍🏼

Dosing works very well! I don't know a better option! As always - Aquasabi has super fast delivery and the service is perfect!

....but somehow I'm disappointed....it's a kind of "screw-on measuring cup" for automatic filling.....not bad in principle, but first of all my lid was broken off and I had imagined a simple, ordinary measuring cup. Either I misread something or it's poorly described! Update: It's my own fault. I just didn't read it! Sorry!

Very practical - unfortunately only for amounts over 5 ml. Otherwise a very useful product. The idea isn't new but still good.

In the execution, however, I have problems with strength. You really have to squeeze hard to get the liquid into the measuring cup.

The measuring cup fits the fertilizer bottles very well without sloshing out at the side. It does what it was ordered along with them for: cleanly and quickly portioning large amounts of fertilizer.

Screw it on. Squeeze the bottle and read off. Good little gadget.

Just screw it on, done. Measures quite well.

very easy to handle

As always super fast delivery. Practical dispensing aid that makes decanting for dosing unnecessary. The graduation should be finer for smaller amounts or smaller aquariums, though. I get by with plastic syringes or pipettes, with which I take the fertilizer out of the measuring cup. That works great, since you neither have to decant nor stick a long tube into the bottle.

Practical and indispensable for withdrawing and dosing fertilizer solutions from Aqua Rebell bottles. The graduation of the cup could be a bit finer, especially for daily fertilization or smaller tanks. Very fast shipping and delivery.

Very practical in use!

Stays tight even when shaking the bottle, easy to dose.

Very practical and easy to handle.

Works really great, easy dosing

perfectly dosable, a good help.
The contents of the bottle can be shaken easily, no more unscrewing the cap. Ideal!

Practical help for dosing fertilizer solutions.

Does the job, recommended for large tanks and a plus

Well suited for larger aquariums. For smaller ones, I would use the lift pump or a syringe.

Best regards
Alex S.

Very practical, fully serves its purpose. To dose very precisely (volume under 3 ml), I put a syringe into the top of the tube and draw up the desired amount. To make that work, just slide a piece of silicone tubing over the syringe's needle connector.

Super practical, even for 5 to 10 ml applications.

Works great, but...
With a 500 ml bottle, the tubing should be shortened, otherwise it can kink. You should also buy one measuring cup per bottle, because otherwise it has to be unscrewed every time, and that way e.g. complete iron fertilizer could end up in the macro fertilizer bottle. Conclusion: Recommended!

works without problems

Hi,
this is a light and easy-to-dose measuring cup

Especially with larger amounts of fertilizer, I find the measuring cup very practical.