Use gloves, mix small portions of acrocrete at a time. Use equal parts of Portland cement and crushed coral. Use just enough water to mix. You don't want the mixture to be soupy at all. Put the acrocrete in the joints. If you have any rubble rock from your Live rock shipment. Place it on top of the acrocrete once it is in the joint. Much like you would building a fireplace. This will help hide and once the acrocrete is covered with coralline. Don't worry about the PH levels with fresh acrocrete. That is only a real concern when making your own live rock because of the amount of Portland cement used. Since we are just using to fill in the joints it isn't enough to be concerned about PH levels. After your done with filling in all the joints you will want to moisten terry towels to keep the rock damp while the acrocreate is curing. I have found terry towels the best as using newspaper or paper towels will dry out too quickly. Also a good idea if possible to cover the tank to keep from drying out. Usually I time it to be done with the acrocrete around bedtime so that first thing in the morning 6-8 hours later your ready to put water back in
Originally Posted by kkiel02
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