2.4L Aquarium CO2 Generator Kit Double Pressurization Enhanced Version Max for 400g+400g Raw Materials, G700S

So far ao good been two weeks now after getting the system, easy startup and tuning. I have this on a kasa smart outlet set to a timer and has run with zero issues. Would recommend using glycerin in the bubble counter vs water. Two reasons for this, you dont have to top the glycerin off as it does not evaporate, and two its easier to count your bubbles and fine tune it, added bonus it looks cool. Set up is straight forward, mixing easy just layer material and pre cool a 2 liter jug of water the night before and add some ice 1 hour before adding and keep it in the fridge. 2 weeks at 1.75-2 bubbles per second on a 20 gallon planted tank seems to be the sweet spot considering my plant load everything grows at a marked accelerated rate. All components are solid, tank is of good quality and safety vave ( blow out ) is a nice feature. Good set up that won't break the bank to up your game to a "high tech" tank. Very happy with this system.

C’est le deuxième j’ai acheté, excellent système co2. Je recommandé.

Usaba antes un sistema de dos botellas, este es muchísimo más efectivo y fácil de instalar y mantener. Lucen componentes de buena calidad, habrá que esperar para determinar su durabilidad, a un mes de uso todo muy bien. El sistema requiere menos piezas para su puesta en marcha, lo cual creo que será más confiable para evitar fugas o ajustes. Fue fácil de poner en marcha, hay que tener la paciencia de esperar unas 18 horas para alcanzar la presión de operación y LEER las instrucciones. El conteo de burbujas fue suficientemente preciso. El paso crítico es: una vez colocados el ácido y el bicarbonato, hay que verter agua FRÍA en un ángulo de 45 grados y tener la tapa y lista, todo esto con el fin de tapar la botella lo más rápido posible ANTES de que la reacción química comience con toda su fuerza y así no desperdiciar nada del CO2 emitido y evitar salpicaduras en las roscas que pudieran cristalizarse y dificultar su posterior abertura al parecer la duración de la reacción con 7 horas diarias a razón de 1 burbuja cada dos segundos será de al menos un par de meses más, esto habrá que comprobarlo, pero la presión después de casi un mes no ha disminuido en lo absoluto. Altamente recomendable, no le hace falta nada para instalarlo y además luce muy bien ! UPDATE: la carga duro 5 meses !, 7 horas diarias, 1 burbuja cada dos segundos, la recarga fue muy fácil. OJO, se cristaliza parte de la mezcla de reacción al finalizar la carga, para remover estos cristales hay que usar agua caliente y un poquito de bicarbonato de sodio, esto los “romperá” y será muy fácil sacarlos.

I'd rate this 5/5 for what it is. I don’t use it anymore because I upgraded to a full CO2 tank setup (which is way less maintenance long-term), but this kit was such a good introduction into CO2 for me. What I really liked is that it comes with basically everything you need to get started, which made the whole process way less intimidating. When you’re new to CO2, it can feel really confusing (like figuring out bubble rates, diffusion, etc.), and this kit helped me actually understand how everything works. The instructions were clear enough, and as long as you set it up correctly, it does work well. It comes with tubing and a diffuser (no CO2 indicator, but that wasn’t a big deal for me). The quality of the materials is actually pretty solid too (no leaks if done properly!) I still use some of the Criscea parts in my current setup like the bubble counter, tubing, inline checker, and diffuser, and they’ve all held up for almost 6 months now with no issues. So even after upgrading, parts of this kit are still useful, which I appreciate. The main downside (and the reason I switched) is just the maintenance that comes with DIY CO2 systems. It’s not bad, but it does require more attention compared to a standard CO2 tank. Once I got more into aquascaping, I just wanted something more consistent and lower effort. Overall, I’d definitely recommend this if you have a smaller tank, are on a budget, or just want to learn CO2 before committing to a full system. It’s also a really good learning tool (honestly could even be fun for a kid or beginner who wants to understand how planted tanks work). Great cheap starter kit that actually helped me level up my setup.

Muy bueno, en m8 acuario trabaja excelente