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Bacterias in nitrogen cycle attach themselves to the surfaces of the rock. The rock that is very porous in a sense that the holes are very small (spoge like porous) will have much more surface in respect to the volume it will occupy, and therefore you will have far more beneficial bacterias to...

It all depends on what type of pics you are taking. Basically, if your focal length is F (counting any extenders), then a person of average height will not fit in the frame if it is closer then roughly 70xF (kids, of course, will fit in less that distance :) ). Or, make a loop with your fingers...

Are you talking about kids' soccer games or real soccer games in soccer stadiums? For kids games you certainly don't need to go with anything longer then 80mm. 55-200 is very long lense, longer then what most people will use. Are you sure you want it? If you want most versatile zoom then go with...

One thing you could possibly try would be a Copper Banded Butterfly fish. They are supposed to eat small featherdusters and similar tube building worms on LR and sometimes even aptasias, so you might be lucky. Of course they are notoriously finicky eaters and not so hardy fish, so it is not a...

There are two school of thoughts. I have a friend who would never use zoom lenses. He uses only one or two fixed focal lenght lenses. And it works for him and the type of pics he takes. I, on the other hand, can't live without the zoom :) For my style of shooting and type of pics I am shooting I...

Coastal waters are gong to be less salty because of the rivers bringing fresh water. Merv, great map. Pitty that the main premse in the latest trilogy from Stanley Kim Robinson (which I liked) conflicts with it :-[

Well, the pump will work harder since the flow will be more impeded but that is not necessarily a bad thing. The point of the recirculating pump is to make sure that water is constantly moving over the media, exposing as much of the CO2 to the Aragonite. More exposure - more Ca in the water and...

Well, I have said total surface area :) , so 12' long 2" wide pipe certainly has a lot of water/air surface area (at least half of what my whole tank has). But you are right, that should ceratinly taken into account. Specially since there might be considerable differential in the dryness of the...

Your evaporation depends only on the total surface area of the water, dryness of the air around the tank/sump and how well it is exchanged, and NOT on the volume. Assuming that you have common geometry of the setup, your biggest unknown factor will be the dryness of the air. Depending on the...

C'mon, you used that instead of: "A census taker once tried to test me. I ate his liver with some fava beans and a nice chianti. Tststststs" :)

Nitrite have to be 0, so give it a day or two. Nitrates show tat it is start to make water changes if you haven't started yet. I would also keep temp sligthly higher, lets say around 78. 74 is certainly inside the range of temperature swings on tropical reefs, but it is on the low side of those...

I know, but every time I rushed that way I made mistakes or found out that I could have done better with something else or some other way. :-[

Check with hidden reef. I believe that I saw something there a couple of weeksa ago. Btw why are you not interested in purchasing over internet?

When anemone climbs the glass it usually means two things: a) In most cases the light is not strong enough, and they are "reaching" for it. What kind of lights do you have? How big (deep) is your tank? Rock/Flower anemone like to wedge in the rocks or burry in the sand. Can your aquascaping...

:) It certainly depends on general dryness of the air outside your house, as well as heating/cooling system you are using inside the house, the amount of air circulation around the tank, and other contributing factors like using humidifiers or dehumidifers, etc.

Maybe you could try making that edge 30%, or so, smaller. It does pull the eye a bit and makes it a little bit dizzy. Also, intensifiing the broder might help a bit. Something to this effect (border should be done a bit better, but this is just for general idea) if you don't mind me messing with...

Congratulations!

First, let me apologise to you and other fellow refers on this forum who will read my rather lengthy reply, but I have found that I disagree on many of your statements, so please do not take my words personally - it is not a p... contest. Rather, think of them as an open discussion, which will...

Strictly speaking, I doubt that you have a cavitation effect :) , and if I am reading you correctly, you simply have air being sucked in the return pipe along the water. Air tends to lift, water wants to go down, they create turbulence in the pipe and the pipe resonates it into loud noise. There...

I am sorry, but I find that argument (though often found on the web) rather dubious. No other animal or plant species is considered to reproduce in distressful situation. Also, where is the logic in that if the splitting is associated with big growth which is a sign of no stress but rather...