My cerith do that all of the time. When I had a ten quarantine set up, I had quite a few eggs that made it but there were also no predators in there. The shrimp alone will make a meal of them and their own (other thread you posted).
Yes, that could be the cause. I believe it has something to do with silicates in the water. I buy ro/di for .50 a gallon and bought my jugs at (gasp) wal-mart.
You don't have to have a sump, it is just for a larger body of water to maintain stability, for me anyway. It seems to be more forgiving and you also have a place to put your heater, pumps, skimmer, etc. out of sight and out of the display tank.
I don't have the size tank you specify, but a 30L. I have 6 holes drilled in the back of mine because I also run a closed loop and it is set up like a larger tank would be, for flow. As reefman stated, Melevsreef is a great place, for you to get ideas and such about how you want your sump/fuge...
I agree. My 30L has about 1400 gph and depending on the direction of the flow, my fine sand stirs just a tad, so I just adjust it a bit. For a 46, I would personally go with higher flow.
I have a pair of yellow headed jaw-fish and don't really consider them sand sifters, but they do shift the sand into piles. I placed my rock on buried PVC-C shaped pieces because of the avalanche that the sand moving caused.
I also agree with the nassarius snails, if you don't have a...
Using ocean water doesn't make a cycle? I have never heard of this, maybe your "friend" can enlighten me on this. My cycles were dependent on the rock, not the water.
1. Depends on what you like to see aesthetically. Some prefer stronger blue as others prefer none.
2. I would stay...