i just got my new reactor 2day.. it says to use about half a cup of kalk to start off with.. this seems like alot.. i am currently only putting 2tsp in my 5g bucket when i drip kalk.. i am losing about 2-1/2g of water to evaporation a day... should i go ahead and mix the half cup?? this seems wrong..if i were just using it to drip kalk, i think it would be fine, but i am using it as topoff.. any sugestions???