Mauro Posted July 8, 2017 Report Share Posted July 8, 2017 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 Quote Link to comment Share on other sites More sharing options...
Mauro Posted July 10, 2017 Author Report Share Posted July 10, 2017 Anyone? Quote Link to comment Share on other sites More sharing options...
ItsCRAYCRAY Posted July 10, 2017 Report Share Posted July 10, 2017 I keep neos (rcs) but I still consider myself a novice. I will do what I can to help. What are your water parameters and what do you keep in the tanks?Sent from my SM-N920T using Tapatalk Mauro 1 Quote Link to comment Share on other sites More sharing options...
Mauro Posted July 10, 2017 Author Report Share Posted July 10, 2017 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? Quote Link to comment Share on other sites More sharing options...
Royboy808 Posted July 10, 2017 Report Share Posted July 10, 2017 Hows the tds and ammonia? The temperature of the tank? Im kinda new to the hobby, but from what i understand if your gh and kh are too high, it could cause the water parameters to be unstable. Are you using RO water with remineralizer? Quote Link to comment Share on other sites More sharing options...
ItsCRAYCRAY Posted July 10, 2017 Report Share Posted July 10, 2017 Yes knowing tds, temp, and ammonia is very important. Not quite sure about use of volcanic stone as a filter media but maybe someone else can comment on that part. What is your lighting schedule. Also what do you mean 450 500 us ro water? How often, what , and how do you feed them also how often and how much water change do you do?Sent from my SM-N920T using Tapatalk Quote Link to comment Share on other sites More sharing options...
oem Posted July 11, 2017 Report Share Posted July 11, 2017 Hi Mauro. I would lower the PH to around 6.8-7.2 and the GH at around 7-8 tops. KH looks good but the NO3 is high as well. I would do a 25% to 30% water change. If you decide to use a little more acidic water in your change to drop PH as well I would do a slow drip over several hours and place the tubing where there is the most water flow to disperse it better in the tank.,,,,Mike Quote Link to comment Share on other sites More sharing options...
Mauro Posted July 11, 2017 Author Report Share Posted July 11, 2017 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? Quote Link to comment Share on other sites More sharing options...
oem Posted July 11, 2017 Report Share Posted July 11, 2017 When you say inert soil I'm not quite sure what you mean. Soil to me is an organic material like in a garden. I hoping you meant an inert substrate like sand or gravel. By the way your English is much better then the three years of French I took in school ! Quote Link to comment Share on other sites More sharing options...
Royboy808 Posted July 12, 2017 Report Share Posted July 12, 2017 How long was this tank set up? Maybe the tank is going through a cycle? The nitrate has to come from somewhere if its at the same level after a large 50% water change.... I would figure out the ammonia levels and test for nitrite again, to see if its cycling. Quote Link to comment Share on other sites More sharing options...
Mauro Posted July 12, 2017 Author Report Share Posted July 12, 2017 19 hours ago, oem said: When you say inert soil I'm not quite sure what you mean. Soil to me is an organic material like in a garden. I hoping you meant an inert substrate like sand or gravel. By the way your English is much better then the three years of French I took in school ! Yes sorry, inert substrate Thanks 17 hours ago, Royboy808 said: How long was this tank set up? Maybe the tank is going through a cycle? The nitrate has to come from somewhere if its at the same level after a large 50% water change.... I would figure out the ammonia levels and test for nitrite again, to see if its cycling. 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? Quote Link to comment Share on other sites More sharing options...
oem Posted July 13, 2017 Report Share Posted July 13, 2017 Maybe if your substrate is on the thin side there might not be enough beneficial bacteria to clean out your nitrates and ammonia as the UGF pulls water thru it. The only tank I have left with an UGF has about 1 1/4" (3cm) of gravel on top. Just taking a guess. Or maybe your test kit is off as I have had that happen as well. Quote Link to comment Share on other sites More sharing options...
ohmiko Posted July 13, 2017 Report Share Posted July 13, 2017 TDS should be 200-300 for RO remineralized GH too high or too low can cause molting problemSent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
Mauro Posted July 13, 2017 Author Report Share Posted July 13, 2017 16 hours ago, oem said: Maybe if your substrate is on the thin side there might not be enough beneficial bacteria to clean out your nitrates and ammonia as the UGF pulls water thru it. The only tank I have left with an UGF has about 1 1/4" (3cm) of gravel on top. Just taking a guess. Or maybe your test kit is off as I have had that happen as well. I think this is the problem. A good substrate height for UGF? 3cm? Quote Link to comment Share on other sites More sharing options...
ItsCRAYCRAY Posted July 15, 2017 Report Share Posted July 15, 2017 Add purigen to your filter, it got rid of my nitrate immediatelySent from my SM-N920T using Tapatalk Mauro 1 Quote Link to comment Share on other sites More sharing options...
oem Posted July 16, 2017 Report Share Posted July 16, 2017 On 7/13/2017 at 1:02 PM, Mauro said: I think this is the problem. A good substrate height for UGF? 3cm? For me 3-4 cm (1.25" - 1.5")has worked with the UGF in the old days when I only had fish. I still have one shrimp tank with that type of filter, but have switched over to HMF or other sponge filters in the rest. Purigen will help if you put in in a hang on filter, but I don't believe it addresses the real cause of the high ammonia level. Mauro 1 Quote Link to comment Share on other sites More sharing options...
chappy6107 Posted July 29, 2017 Report Share Posted July 29, 2017 I keep my gh at 6-8 for my neos. Quote Link to comment Share on other sites More sharing options...
toanga Posted January 31, 2020 Report Share Posted January 31, 2020 I keep the red cherry shrimp I have two tank and one of them made from cement The glass community didn't grow well but the cement community reproduce and grow pretty fast ! Maybe the your TDS or GH is not fit them ? Quote Link to comment Share on other sites More sharing options...
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