what is the most effective way to practice arpegios?

[coffee_guy]

Do you guys practice them chromatically or just isolate one at a time?

[flyinfingers]

Coffee guy, I love your spirit and I think you are doing quite well as a student of eight months.  I'm no expert as I am back to Grade 3 (pisses me off) when I was playing Grade 10 at 14 years old.  Yes, do them chromatically because separate would be the chords, correct?  Do them both ways and also do octaves (my teacher has me doing octaves 4X up and 2X back) and trills 8X with two fingers and using all fingers in one octave and of course the scales in three different speeds as I had a big cluster F with the right hand with my fingering and I'm just now getting that down pat. 
Go up and down the piano from base to treble with the arpeggios (can't check that spelling at the moment). That is what my teacher is telling me to do and also accenting notes seem to be a big deal, although it bores the hell out of me on this digital piano. 
I do extra on my own because I'm a firm believer in technique.
Do you have the Hanon books?  Get the Hanon virtuoso Pianist book one and that is what I am using now and you can incorporate all kinds of different stoccata notes and accent note  and legato with one hand and stoccata with the other and other variations into that for exercise.  I think after eight months you could do those exercises.
I hope this helps.  I can't believe none of the experts have helped you out thus far, but I certainly am not one of them.  This world can be a cold place.  I think you played your piece quite nicely on the internet.  Just needed some refining for expression.

[49410enrique]

i would play with different combinations, sometimes i'll run through chromatically, sometimes i'll outline a scale, other times i utilize relative and natural minor relationships and other times i run through them based on the fully diminished 7th chors, i.e. build the 4 note double tri tone, hit the arpegios of each tone, move up 1/2 step do it again, and if you go 1/2 step more you'll hit all twelve.

also depens on how much time you are dedicating, are you doing only major and minor triads, are you doing dominant 7ths? are you also doing contraray motion? are you doing different intervals? contrary and intervals? 

i don't want to say there's a wrong way as long as you getting through everything fairly quickly.

[mike_lang]

Do you guys practice them chromatically or just isolate one at a time?

Well . . . what are you trying to get out of practicing arpeggi?  That would determine whether or not to linger on them.  Personally, I don't find it useful to run through the cycle in one day, but as to how long to remain on one key, that depends on what you are trying to achieve . . . ?

Mike

[nyiregyhazi]

Do you guys practice them chromatically or just isolate one at a time?

Certainly not chromatically, or not very often. Practise like with like as much as possible. I play the white note ones as a group and then the black note ones as a group (I'm not giving the full details here, but it would take a while to be more specific). Only later do you want to try jumping around between them.

[Bob]

Whatever way you want.

Circle of fifths, chromatically, over a scale, over a progression.

All inversions.

Starting hands in different inversions.  Ex. LH on root, RH on 1st inv.

Start on bottom, top, or contrary.

[coffee_guy]

flying, I sent you a PM, I hope you received it.

Thanks everyone for your constructive advice.