jewels

(mounted within an excellent reflector) A single 13W spiral can yield over 100 PAR @ 12 inches

Will It Hold Up? - only until someone leans on it. BAD http://t0.gstatic.co...bgbueDeeuSCjDvQ GOOD http://t3.gstatic.co...Hb10Qnm8Rl4JGFQ

Avoid the five pounder. It can be equal in price to exchange larger COB's

Chondrococcus columnaris has similar symptoms. It is a bacteria. Therein lies the danger. Water change Water change Water change

"data shown in Figs. 10 and 11 clearly demonstrate that green light more effectively drove photosynthesis than red light in the white light at high PPFDs. ,,,Namely, red light is more effective than green light in white light at low PPFDs, but as PPFD increases, light energy absorbed by the uppermost chloroplasts tends to be dissipated as heat, while penetrating green light increases photosynthesis by exciting chloroplasts located deep in the mesophyll. Thus, for leaves, it could be adaptive to use chlorophylls as photosynthetic pigments, because, by having chlorophyll with a ‘green window’ the leaves are able to maintain high quantum yields for the whole leaf in both weak and strong light conditions" The "high" ppfd's of which they speak, granted are higher than what is typicly seen @ the substrate in our aquariums. The reason I found this intriguing was due to odd values Iwas getting from my Apogee PAR sensor. It would seem the metre really could care less about the manufactures spectral plots. I got equal values from a well used Marine-GLO bulb vs.'s a spanking new 6500K bulb. Long story short - buy bulbs that emit a colour you find pleasing.

My stickman stopped rock'n in the free world. Is he OK ?

Found an intersesting article on the effects of light spectrums; specificly green. Although mostly over my head , I have deduced that we asumed red and blue soley drove photosynthesis because that is what cloroplasts so readily absorb. However green light had greater penetration and thus becomes available (present) to more [of the] tissue. http://pcp.oxfordjou...t/50/4/684.full " In other words, < 1% of the red or blue light is transmitted through the chloroplast. On the other hand, for wavelengths that are weakly absorbed, such as green light, T is considerable. When ε for green light is assumed to be 500 m2 mol–1, A and T would be 0.05 and 79.4%, respectively."

If nothing else, I have extended the shipping season. :ml:

Pulled the pin today @ +4C 4 of 4 all A-okay

Bang on. I was recently surprised to find that a MARINE-GLO of unknown age was putting out identical PAR as a spank'n new Ushio 6500K of equal wattage ,,,Surprised; as this would betray conventional 'wisdom' :shock:

They are all about the playtime. Depending in the set-up, you may not spy them in your tank that often. I would recomend buying them a dozen at a time. I do not believe they will adress a snail problem; there are still MTS to be seen in there after years. I do believe, however, they are keeping the red cherry shrimp population in check.

With the bulb resting directly atop the tank, the temp dips to about 8 overnight and makes gains to 10 or 12 over the course of the day. The single holder in there has only but three or four eggs left. We are into the sixth week of gestation now - double normal duration. I do not know what becomes of the other eggs; perhaps they are absorbed? Abandoned? I suppose it is possible they are hatching out as well. I am yet to see wee ones.

No, I would'nt venture so say they are actively breeding. The only shrimp that was berried when the temps started falling is now only holding perhaps a third of the original quantity of eggs. I have never seen a partial drop before, and do not understand the contributing factors. I originaly posted this on the Eighth. I think that girl has been holding about a month now.

11C and holding

13C and falling.

http://www.wetwebmedia.com/FWSubWebIndex/GrwLmtChems.htm

There is a school of thought that water changes dilute hormones that fish produce, it is said that, these hormones will stunt their growth.

You guys did not happen to learn that @ the same time did you ? :chair: Thanks for the replies folks. I am looking forward to putz'n around with the new toy. :ml:

Does anyone care to share experience with TDS metres? I have been shopping around - and am looking to buy one. There are some fine looking ones from HM Digital. Anything to watch out for? Do you wish you had gotten a different one? Do you love yours? It frightens me when I see any product with such a large price span. The $20.00 ones claim the same accuracy as the $450.00 ones. I do not (knowingly like to) buy junk. I hate picking how much to spend on an item - when they all look the same. :boxed: http://www.tdsmeter.com/products/tds4.html

I have read that red cherry shrimp can survive temps down to near freezing. Has anyone ever had theirs down there? I still have a nano set up in my detached garage. The water is a brisk 16 C these days. They all seem to swim freely, eat , and go about their miniscule business without visible hardship. I have read that they will not breed below 18C, although I noticed that I have one ♀ heavily berried at the moment. They may not breed below that temp. - but I believe they can successfully gestate. Besides shivering, how may one tell that shrimp are uncomfortably cold ?

Starter or inductor?

Very good. Thanks for the quick response! :ml:

I ( as a buyer) have recently completed a transaction listed in the buy/sell. I was curious if there was an appropiate way to publicly thank, promote or recommend the other party ? I have just thoroughly read the buy/sell rules and believe that is definetly NOT the place for it. My morals prompt me that this a required courtesy. I do however acknowledge that the path for praise would also facilitate the opposite. :boxed: Start a general thread? Post on their personal profile? Forget about it ? What to do ? :well:

Feel free to make up your own explanation.

Interesting dissertation http://www.cichlidae.com/article.php?id=42