What Common Plants Change The Water Conditions Alot?

[bloatedguppy]

Well I finally started changing to live plants in my 6 year old, 25 gal, established tank. So far I have an 8in anubias nana which me and my fish really enjoy and now I was wanting to get more plants since its seeming to do good but I'm still looking at the common ones. I'm also concerned about how much these plants will change the water conditions? I was planning on geting some more species of anubias, java ferns, and what about elodea? I heard elodea can make some big water changes if not careful. Also how much should I give these plants fertilizer? I have a 25 gal, low-med light, 15 tropical fish with the same conditions and my ph is 7.4 and I do weekly water changes. So what are some of your ideas and experiances?

 

[RadaR]

Change water conditions..
Plants will absorb a lot out of the water, ammonia, nitrite, nitrate, phosphates, carbonate hardness, etc. But this isn't a such bad thing. Your Anubias is doing the same, albeit a little slower. If water conditions changed dramatically then yes, that would cause shock and kill the fish. But the plants won't absorb anything THAT quick. Think of plants as a nice looking, second filtration system.
It's really nothing to worry about at all.
Weekly water changes are your friend
Current tank inhabitants and equipment lead me to believe that a trace solution would be good for the plants, and if you wanted you could get some liquid carbon to improve things. Really bring out the growth and colour of your plants.
Trace solution here.
Liquid carbon here.

 

[aaronnorth]

i agree with Fred, they absorb ammonia and nitrite fairly quickly but apart from that, nothing to a bad effect

 

[SuperColey1]

I think you have heard/read more silly scaremongering.
Elodia/Egeria is known to be very good for fish in that it secretes antibiotic substances which can help prevent blue-green algae. Blue green algae is a form of bacteria.

Its also very good as a starter plant as it is hard to kill and it absorbs loads of nutrient.

AC