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There are true puffers in fresh, brackish and saltwater. Sometimes the brackish species may also be sold as freshwater fish.

To calculate your monthly cost: Watts per lamp x Number of lamps x Operating hours each day x 30 (average days each month) / 1000 x Cost per kilowatt hour (I pay around 7.5 cents) Hope this helps.

It's nice to know that I am not the only one around who opted to study ancient Hebrew. Good luck in your search.

When looking at degree programs related to religious areas of study you may also want to look at the theological stance of the department. There are a lot of universities that offer religious degree programs but they run the gamut from very fundamental to the very liberal. There are also many...

Those who would give up essential liberty to purchase a little temporary safety deserve neither liberty nor safety. Benjamin Franklin

This may not be exactly what your looking for but look for either moon rock or reef rock by Carib Sea. It 's not very shapely but you can get for around $1 per pound, minus shipping.

I knew a guy who could not keep anything for several months. We later learned that he initially washed the tank with Dawn. Could there have been anything like this involved at any point in time, rocks, sand, tank, etc. (particularly with the rock and sand)? Just a thought.

Thanks for the ID. Knowing what to look for really helps in identifying organisms better (I found a species ID and information on its natural history). Thanks again.

Best of luck. After spending TENS of thousands of dollars on a private school education and earning a BS in psychology, religion and Spanish, I am starting part-time next semester for a degree in chemistry and physics. Again good luck and never stop learning.

The only movement is at times a slight tilt of the "head" and less frequently the tenticles may fold together like an umbrella folded backwards. There is also no tube and their height does not change. Here is another photo for comparison. These are the best the camare (G2) will do without an...

Anyone have an ID for these. They resemble miniature sea lillies, but they are only a few millimeters tall. I have others photos but this is the best of the closest.

Aside from the usual decomposing organic matter, be sure there is enough surface agitation to increase the saturated oxygen to fuel the bacterial processing of the nitrogenous byproducts.

To calculate your monthly cost: Watts per lamp x Number of lamps x Operating hours each day x 30 (average days each month) / 1000 x Cost per kilowatt hour (I pay around 7.5 cents; you probably pay considerably more) Hope this helps.

On the second photo the black furrow in the center is the opening between the shells as seen from the end opposite the hinge. The top photo is a side view (the right side of the opening in the second photo). For example, rotate the third pic 90 degrees horizontally to the left and you have the...

Genus Arca. It's a molluskan bivalve like clams, oysters, muscles, etc. Here is a pic from Sprung's Invertebrates.

Just to update. System contains a 10 gallon tank and 5 gallon refugium, 20 lb. live sand and 15 lb. rock, both from the Gulf. The refugium is presently empty except for sand. I've added 20-25 ml of phyto each day since Thursday, when I added sand and rock. Thursday evening ammonia read .6...

The latter. It appears that there is another on another rock as well. Thanks for the id.

Here is another.

Does this look like a turkey wing? These aren't the best pics but without removing the rock or moving the tank I can't do much better.

I'm keeping regular readings for pH, ammonia and nitrite. I'll post those when done. Depair because I regret not following my "first love" and choosing fishkeeping only as a hobby and not a career. After 15+ years (I lose count) and countless tanks it has become a second career, just not...