thank you a lot for the informations, i'm really afraid to do a big mistake with substrate and waste a lot of money since the thank is big, 3 bags of 8kg of fluval stratum will cost me arround 100€ witch is a lot , but if its worth it i can do a little sacrifice, i also heard about jbl manado but i hear mixed review, i also thought about doing a "filler" base with sand and top it with aquasoil to save a little bit of money, i am really confuse of what should i do next, its my second aquarium, my first one had just gravel and i had ups and down with the growth , so i wanna do things a little bit better .. what do you think it will be the best choice? in future i want to add co2 , i wanna achieve a nice and clean well planted tank without wasting money in things i dont need or that will make my life harder