furan dosage regimine

[Bud]

Can I still change 100% water every day while dosing with furan2.Directions say;dose,wait 24 hrs,dose again,wait another 24 hrs do 25% w/c..repeat 4 regimine 4 more times.Cant I dose, wait 24 hrs,change water,dose,wait 24 hrs,change water,ect.,ect.?Dont know if this(furan) will effect biofilter.should I get a cheap ammonia meter while Im medicating?I thank you in advance for the advice.

[TURQ64]

That's actually the preferred way to do it...it shouldn't kill off your bio, and you may need to run it longer..until whatever is completely gone and then some..

[Bud]

Good(one of the guys I was hoping to hear from).It calls for 4 doses,I have enough for 7 so Ill use it up.Then starts the acriflavine.....Thanx again.