Petshrimp.com Discussion Forum

it looks like my descriptions for shell rot which is usually secondary to either damage or overcrowding and water quality issues in captive lobsters.. i have only theoretical knowledge, fish is my hobby, veterinary medicine is my job, i read what i can on fish disease though have only been keeping f...

the pH of r/o water should in theory be neutral what determines the pH well if you like chemistry it is the hydroxyl ion versus hydrogen ion balance that is responsible for this in pure water there is nothing to bind with either H+ nor OH- so you only have either H2O or equal numbers of hydrogen and...

how do you culture your rotifers etc

just the od sweetwater type techniques or do you purchase starter cultures and grow algae food for them?

andrew

r/o unit will remove roughly 95% of dissolved solids so straight r/o water should read at about 5% f your previous hardness so say roughly 10-12 ppm total hardness this water will probably have a pH similar to what it started at , though measuring the pH of water that is getting close to pure is ext...

dont believe there are
most pathogens are speifically adapted to do a job in a particular type of host tissue

some of the bacteria involved in shell disease sound like they would cause fin rot/mouth fungus/body ulcer type situations

most viral, protozoan diseases are species specific

andrew

unless biospira has an expiry date on and is used well before this and in a darkend tank then personally i dont think it will work denitryfing bacteria can not live in a sealed container with no food and no oxygen for an indefinite period if they are dead sporulated bacteria then they will not cycle...

you say they were in the water only 1 day either the water was not ideal or the shrimp were already on there way out andrew BOD demand depends on many things, so the air pump in cool fresh water is probably not needed for 4 shrimp with a decent surface area to the water to allow gaseous exchange the...

http://www.petshrimp.com/articles/whyshrimpdead.html

try here for most of your questions
andrew

table from william wildgoose book mg/l CaCO3 dH soft 0-50 3 moderately soft 50-100 3-6 slightly hard 100-200 6-12 moderately hard 200-300 12-18 hard 300-450 18-25 very hard >450 >25 andrew

not much detailed information about invertebrate disease as yet any research has focused on farmed food groups there are many bacterial conditions known in marine crustaceans (these are believed to affect similarly the freshwater species) shell disease - usually secondary to poor water can be caused...

just an update the shrimp in question must be male, i have 10 babies approx 5mm long and some of them already have red colouration to them does this suggets i have been lucky in getting shrim with intense colouration? i thought that young shrimp were supposed to be paler? how long for a milky shrimp...

thanks mustafa i ask here cos i feel it's a more reliable source , and i have already seen the link


cheers

thank you i read some internet link about micropitting in the chitin shell of the shrimp(is it chitin or is that just insecrts?) with too acidic waters hence i started to get worried they suggested this micro pitting lead to 2 things a dull looking shell and external organisms being able to cling to...

so you guys think is nitrates , and not fast water changes or anything silly i think the algal coverd moss was too dense for good water flow and was holding onto material/detritis and causing a bit of a dead spot in circulation i thik with that now gone i should be ok and the good thing is that i no...

sorry , my mistake nitrate at 50 and nitite at zero
apologies for the confusion