Promoting aquarium related discussion.
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aquarium-forums.com Promoting aquarium related discussion. |
When I do change water in my tanks I use 75% RO water to get a PH rate of about 6.8 and GH of 6-7. But after a while (about a week) the PH value is going up a bit.... What are the factors of a PH raise it raises up to 7.2 (The hardness stays the same ,though these too parameters as I understand are not influenced by one another) ??? 10x gizmo |
"gizmo" <amitb@gtek.co.il > wrote in message news:newscache$3shpkh$mjg$1@lnews.actcom.co.il... > Well after learning a bit more about RO systems.... > When I do change water in my tanks I use 75% RO water to get a PH rate of > about 6.8 and GH of 6-7. > But after a while (about a week) the PH value is going up a bit.... > What are the factors of a PH raise it raises up to 7.2 (The hardness stays > the same ,though these too parameters as I understand are not influenced by > one another) ??? > 10x > > gizmo > > I cant't really explain the relationship between hardness and pH. It has been too long since I learned about it. However! This is where I learned about it... http://faq.thekrib.com/begin-chem.html That is an AWESOME article that will explain it very well! The key word here that you need to become familiar with is... "buffer" Also, several things can effect your pH in a tank. Driftwood tends to lower it while certain substrates will raise it (Like argonite sand or crushed coral etc) What type of substrate do you have? If you want a lower pH I would recommend either "Discus Buffer" or "Neutral Regulator". Or, you could do CO2 injection if you wanted to keep plants, that will naturally lower your pH as well. Also, why exactly are you mixing the RO water? I didnt understand what you wrote. ~Mort |
> Well after learning a bit more about RO systems.... > When I do change water in my tanks I use 75% RO water to get a PH rate of > about 6.8 and GH of 6-7. > But after a while (about a week) the PH value is going up a bit.... > What are the factors of a PH raise it raises up to 7.2 (The hardness stays > the same ,though these too parameters as I understand are not influenced by > one another) ??? > 10x > > gizmo well giz i was just wandering through this thread and i read that you were having some problems understanding the ph in an aquarium. i didn't see what type of fish and plants you were trying to keep other then the mention of South american and the use of R O water.. the climbing ph after a week is probably the result of the buffering capacity of the water your useing to achive gh of 7. i kept discus and a lot of other south americans for a long time our source water was gh 20 and ph of 7.8 not good.. so i would use bufferd compounds to bring the ph down and the use of R O to help with the hardness..many companies make buffers look for them at your local retailer. if they don't carry them look to a store that has a better inventory of esoteric supplies. your plants will look more vibrant and do better with the addition of plant nutrients from the store as well in most cases fish poop and it's derivatives do not supply enough of what the plants need most.. buy some good books start your own library and read alot, often the info that comes from the net is from well meaning but not always the most knowledgeable people....so get some books... |
Not me nor my plants nor my fish suffer from PH of 7.2-7.4. I also compete the hardness issue by mixing R.O water with tap water - I get medium soft water which I m happy of. Yes I do take care of my plants with daily fertilizers as well with aquatic plants compounds in the gravel in order to feed the roots... Yes I do use CO2 system (maybe not enough of it but I have 2 Naturafin systems + 4 light tubes which provide 144watts of light. Yes I might have a buffering problem, no I don't know what my KH is but what bothers me most is that PH rises just after a short while. But I try to maintain partial water change mixed with tap water to insure buffering. I did my homework (most of them) and did some reading....But I just can't figure out why my PH rises and then stays stable (plants and fish do seem happy) Another problem I have is my Amazon sword plant - not growing and maybe start showing symptoms of chlorosis..... I might get some jobe spikes for it. I m still open for further suggestions. Gizmo "digger" <dmc@wightman.ca > wrote in message news:69874e0d.0309200910.4e117f3d@posting.google.com... > "gizmo" <amitb@gtek.co.il> wrote in message news:<newscache$3shpkh$mjg$1@lnews.actcom.co.il >... > > Well after learning a bit more about RO systems.... > > When I do change water in my tanks I use 75% RO water to get a PH rate of > > about 6.8 and GH of 6-7. > > But after a while (about a week) the PH value is going up a bit.... > > What are the factors of a PH raise it raises up to 7.2 (The hardness stays > > the same ,though these too parameters as I understand are not influenced by > > one another) ??? > > 10x > > > > gizmo > > well giz i was just wandering through this thread and i read that you > were having some problems understanding the ph in an aquarium. i > didn't see what type of fish and plants you were trying to keep other > then the mention of South american and the use of R O water.. the > climbing ph after a week is probably the result of the buffering > capacity of the water your useing to achive gh of 7. > i kept discus and a lot of other south americans for a long time our > source water was gh 20 and ph of 7.8 not good.. so i would use bufferd > compounds to bring the ph down and the use of R O to help with the > hardness..many companies make buffers look for them at your local > retailer. if they don't carry them look to a store that has a better > inventory of esoteric supplies. your plants will look more vibrant and > do better with the addition of plant nutrients from the store as well > in most cases fish poop and it's derivatives do not supply enough of > what the plants need most.. buy some good books start your own library > and read alot, often the info that comes from the net is from well > meaning but not always the most knowledgeable people....so get some > books... |
Cris On Sat, 20 Sep 2003 20:41:58 +0200, "gizmo" <amitb@gtek.co.il > wrote: >Yes I might have a buffering problem, no I don't know what my KH is but what >bothers me most is that PH rises just after a short while. |