big_gamm Posted January 15, 2012 Report Share Posted January 15, 2012 Hey guys I was wondering wat category would a fresh mangrove jack be under it has been turned into a fresh water one would it be counted as a native? Link to comment Share on other sites More sharing options...
tuffy_rana Posted January 15, 2012 Report Share Posted January 15, 2012 Hey guys I was wondering wat category would a fresh mangrove jack be under it has been turned into a fresh water one would it be counted as a native? yeah its still native freshwater, brackish or full salt dont matter. what you mean turned into fresh? is it wild caught saltwater and converted to fresh? they colour better in brackish to full salt as they grow. how big? Link to comment Share on other sites More sharing options...
Craigo Posted January 15, 2012 Report Share Posted January 15, 2012 not sure what you are asking here mate? Jacks are native - Yes Jacks live in freshwater - yes BUT, you will find them in saltwater swell & we have caught some monsters way up the coomera river & off peal island in the bay. What is it you would like to know? Link to comment Share on other sites More sharing options...
big_gamm Posted January 15, 2012 Author Report Share Posted January 15, 2012 I was just wondering if if was classified as marine or native and sorry bout first comment it dnt make sense I no Link to comment Share on other sites More sharing options...
tuffy_rana Posted January 15, 2012 Report Share Posted January 15, 2012 I was just wondering if if was classified as marine or native and sorry bout first comment it dnt make sense I no all good. we have native marine classification in a round about way though some spp. are found in other countries waters aswell Link to comment Share on other sites More sharing options...
__CAV__ Posted January 16, 2012 Report Share Posted January 16, 2012 why do people convert jacks from fresh from salt? just wondering cause i know the big mommas (and daddy) jacks go from the estuarys out to the reefs when they get larger enough, so wouldnt it be better to keep a mature jack in salt water? Sorry for hijacking your thread too big gamm Cav Link to comment Share on other sites More sharing options...
Syndicate Posted January 16, 2012 Report Share Posted January 16, 2012 Alot nicer color in salt same as a barra imo Link to comment Share on other sites More sharing options...
__CAV__ Posted January 16, 2012 Report Share Posted January 16, 2012 Alot nicer color in salt same as a barra imo yeh i'd agree with that, I've seen ones caught on reefs and they are bright red, where as the ones from estuarys/brackish/freshwater are more of a brownish sorta red Link to comment Share on other sites More sharing options...
big_gamm Posted January 16, 2012 Author Report Share Posted January 16, 2012 Thats all right its all good info for me but the reason i chose a fresh water one is because im kinda new to this in a way and not really confident enough yet for a marine setup thats the reason y i chose a freshie Link to comment Share on other sites More sharing options...
Pet_City Posted January 16, 2012 Report Share Posted January 16, 2012 They are happier in at least brackish. I guess I'm unsure about what's hard to keep the in salt water? All you need to do is mix the salt. You don't need all the bells and whistles that a reef tank needs. Don't even need a skimmer when you water change regularly. So really all it is a freshwater tank filled with saltwater. Link to comment Share on other sites More sharing options...
big_gamm Posted January 16, 2012 Author Report Share Posted January 16, 2012 True well thats handy info i assumed u needed all bells and whistles Link to comment Share on other sites More sharing options...
Pet_City Posted January 16, 2012 Report Share Posted January 16, 2012 Nope Just the stuff that you would need for your freshwater, heater and filter etc, but you fill the tank with pre-mixed salt. Or conversely you could buy the seawater, but mixing it yourself at home means less jugs or getting it trucked it. For a jack you don't need super premium salt formulated for reef corals, just regular inexpensive marine salts. I still recommend mixing it in a wheelie bin or something with a powerhead over night. Test it with one of those $10 bobber type hydrometers to make sure its not super salty and then you can pump it straight into the tank with the powerhead and some hosing after you have done your water change. Good luck! Link to comment Share on other sites More sharing options...
fishguy23 Posted January 16, 2012 Report Share Posted January 16, 2012 even straight NaCl, will work for a fish only setup. no need for aquarium branded salt Link to comment Share on other sites More sharing options...
Pet_City Posted January 16, 2012 Report Share Posted January 16, 2012 I suppose you could but when you can buy a $10 bag of marine salt that does 250-350 litres depending on the salinity required why quibble over DIY? Link to comment Share on other sites More sharing options...
fishguy23 Posted January 16, 2012 Report Share Posted January 16, 2012 Never said anything about DIY, given the requirements I was just stating that pure rock salt will work, op never stated the size of the tank so given a jacks growing size and tank requirements I would assume it's a large tank. If your doing 10-20% waterchanges weekly or fortnightly could be a couple hundred litres, that's adds up at $10 for say 300l, that could be anywhere up to $500 a year depending on size and frequency of water changes Link to comment Share on other sites More sharing options...
