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	Potassium Sulfate
mattyboombatty Moderator Tenellus Obsessor Posts: 2790 Kudos: 1507 Votes: 1301 Registered: 26-Mar-2004	I was going to order some of this from Greg Watson, but I need to know if this stuff is safe to dose up to recomended potassium levels. I don't need to dose Nitrate or Phosphate very often because I get plenty of that from natural sources, but I need the Potassium. Will sulfur concentrations eventually build up, or do plants use it, maybe it evaporates?? Thanks, Matt Critical Fertilator: The Micromanager of Macronutrients
Posted 26-Jan-2006 11:45
Untitled No. 4 Big Fish Posts: 488 Kudos: 452 Votes: 33 Registered: 07-Nov-2004	I use K2SO4 to dose potassium and I think it's pretty safe. I also perform a 70% water change a week, so I can't really tell about sulphate build up, but it's supposed to be safe for the fish. I know my fish don't mind it.
Posted 26-Jan-2006 11:45
trystianity Mega Fish Posts: 1028 Kudos: 926 Votes: 49 Registered: 20-Mar-2004	I use it too, lots of people do. As far as I can tell, it's safe.
Posted 26-Jan-2006 11:45
bensaf Fish Master Posts: 1978 Kudos: 1315 Registered: 08-Apr-2004	Use it too. But only once a week as the KNO3 and KH2PO4 and TMG all have Potassium. Potassium Chloride will work too. Some days you're the pigeon and some days you're the statue. Remember that age and treachery will always triumph over youth and ability.
Posted 26-Jan-2006 11:45
mattyboombatty Moderator Tenellus Obsessor Posts: 2790 Kudos: 1507 Votes: 1301 Registered: 26-Mar-2004	Thanks evryone, I'd just like to mix it up I guess. Bensaf - you know where I can get KCl, or if it's sold with a common name? Greg Watson doesn't have any. Critical Fertilator: The Micromanager of Macronutrients
Posted 26-Jan-2006 11:45
trystianity Mega Fish Posts: 1028 Kudos: 926 Votes: 49 Registered: 20-Mar-2004	KCl = Fake salt. It's the only good use I can think of for the stuff.
Posted 26-Jan-2006 11:45
mattyboombatty Moderator Tenellus Obsessor Posts: 2790 Kudos: 1507 Votes: 1301 Registered: 26-Mar-2004	KCl = Fake salt. I see myself getting stared in confusion at asking some grocery store employee where their "fake salt" is . Brand names? Critical Fertilator: The Micromanager of Macronutrients
Posted 26-Jan-2006 11:45
trystianity Mega Fish Posts: 1028 Kudos: 926 Votes: 49 Registered: 20-Mar-2004	Nu-Salt is one. It's usually right beside the real salt in grocery stores. Ask them for "Salt Substitute" because that sounds much nicer. Some water softener pellets are pure potassium chloride, you can get a 10kg bag of it at a hardware store if you really want to. Just check the ingredients before you buy. Last edited by trystianity at 31-Aug-2005 21:52[/font]
Posted 26-Jan-2006 11:45
mattyboombatty Moderator Tenellus Obsessor Posts: 2790 Kudos: 1507 Votes: 1301 Registered: 26-Mar-2004	Thanks Tryst . Now I know 2 things - what water softener pillows are made of(and fake salt), and where to get my potassium from. Critical Fertilator: The Micromanager of Macronutrients
Posted 26-Jan-2006 11:45
plantbrain Big Fish Posts: 329 Kudos: 226 Votes: 0 Registered: 23-Aug-2003	I'd personally stick with K2SO4. Plants use SO4.Disulide bridges in enzymes, Fe-S bridges for electron transport etc. Tanks have much less SO4 issues than Cl issues at high concentrations. If yopu do 50% weekly water changes, the max concentrational build possible(assumes no plant uptake) is 2x whatever you add weekly. If you do not do many water changes, you can dose a little on the low side. Maybe 5-10ppm a week. Regards, Tom Barr Regards, Tom Barr
Posted 26-Jan-2006 11:45
mattyboombatty Moderator Tenellus Obsessor Posts: 2790 Kudos: 1507 Votes: 1301 Registered: 26-Mar-2004	Maybe I'll use both then if the sulfate will be used by the plants. Critical Fertilator: The Micromanager of Macronutrients
Posted 26-Jan-2006 11:45


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