Mauro

I think this is the problem. A good substrate height for UGF? 3cm?

Yes sorry, inert substrate Thanks 1 month, tested today, ammonia 0 No2 0 No3 at the top of the scale... Nothing about substrate tickness and undergravel filter? Maybe the substrate be too thin?

Thanks guys, water parameters are on the 1° post. I change water yesterday, a big WC, about 50%, today No3 are at the same level... Inside the tank (60L) i have only a Microsorum, Ceratophillum and some floating plants. Dont understand why... No problem for Gh and Ph i can manage them. In another 30L tank i have about 0 No3, and the water are the same as the conduction. Maybe the thickness of the substrate?

Parameters are: kh: 3 Gh 11 No2 0 No3 5 Ph 7.8 I keep yellow neon, blue dream and bloody mary. Not in the same tank but the parameters are the same. Today i see a blue dream with moulting problems, how is it possible with Gh 11?

Anyone?

Hi guys my name is Mauro and i'm from Italy. Sorry for my bad English, try to understand me pls. I'm not new with shrimp keeping, have about 4.000 liters of water only for shrimp, i successfully breed all Cantonensis Mariae shrimp like CRS, CBS, Pinto and all other type but i really suck with Davidi... I dont understand where the problem is. This is my setup: -40 litres tank -Undergravel filter -sponge filter -water about 450/500 us RO water and Dennerle gh/kh+ salt - volcanic stone and glass ring as filter media - inert soil At the beginning everything is fine but the reproductions are few and the babies die or grow very slowly... Help me pls. Thanks