[@Auction: SPS]

55

[@Auction: SPS]

40

[Selling black tip reef shark and etc.]

Try selling to Underwater World or RWS bro. Hobbyists unlikely to have big enough tank for it.

[Selling black tip reef shark and etc.]

Black tip can grow up to 5'. So u need at least a 1,000-gallon tank, with good filtration. Sharks need pristine water.

[kH and Ca - trouble raising levels]

And API is hopeless?

[which LFS do you love the most?]

AM for its best display tanks, and Iwarna for friendly service.

[HD Video of my 240 G SPS dominated reef]

I can't click to open. Can provide link?

[kH and Ca - trouble raising levels]

Oh ya, Hanna. Good?

[kH and Ca - trouble raising levels]

Someone told me shld invest in Halo kit (not sure of spelling). Says it comes with electronic reader. Opinions? Cost??

[kH and Ca - trouble raising levels]

Let me test a new batch of freshly mixed water. If still low, then maybe something wrong with test kits.

[kH and Ca - trouble raising levels]

I've not tested for Mg level. I used the calculator and it suggests quite a high volume of additive.

[kH and Ca - trouble raising levels]

Hi folks, am using API test kit and found that my tank's kH and Ca levels are a bit low (7 and 390). Even right after dosing Aquapharm Seabalance A and B, levels remain unchanged. Anyone can help?

[grown maxima and new crocea]

Clams are easy to keep if u keep calcium level high, light intensity high, a secure spot where they won't fall over,and away from predators and strong direct currents.

[SPS Husbandry and Keeping]

Ok I've started testing. Seems my Alk and Ca were below ideal levels. Cld be because my tank has lots and lots of coraline algae.

[Lights!]

Read old post before this on Lighting Level. MH found to be superior.

[Lights!]

Besides having a somewhat unnatural rendition, LED can be temperamental. I hv heard of failures within a year. And very little study has been done on rate of degradation. For instance we know we need to change T5 and MH after 3,000-5,000hrs because outputs dip after that. But what about an LED driver - how often do we need to change to maintain same level of output?

[Lights!]

MH has been around a long time. Even before T5s. Simple research will tell u how much wattage u need. otherwise, T5 is good alternative. but I personally find LED too artificial... the same as the new LED TVs... everything appears like CGI.

[Lights!]

I am not sure. There may be some efficiency loss. why buy a 150w set and run it at less than its full potential though? Also with MH, u replace one or two bulbs every 5,000 hrs or so, compared with 8 T5 tubes every 3,000 hrs. So MH much cheaper in long run. I don't know the replacement cost of LEDs, but the drivers can't be cheap. I think they are also not as robust as MH or T5 on the whole.

[Lights!]

I heard they cost the most in terma of electricity bill lol have yet to try

That's one misconception. A 150w set of LEDs will consume the same power as a 150w MH set.

[Lights!]

U might wanna consider MH for Long-term cost efficiency. Watt for watt, MH gives more bang. Heat issue is overdone... Place it 30cm above water and it's fine. Get the most natural look, with shimmer like sunlight on reef.

[t5 tubes- how often do you change]

Actually, the lumen degradation is very slight. After 20,000hrs, still at 95% output efficiency.

You can refer to http://t5lightingusa.com/t5-lighting-benefits/ for better illustration (see the graphs).

[t5 tubes- how often do you change]

Around 3,000 hrs

[SPS and temperature]

Brings up reports of coral bleaching brought about by global warming. Guess it has to do with temporary stress or permanent stress. Global warming us the latter. Also other parameters may be influenced by rising temperature, like planting concentration, dissolved oxygen level, etc.

[SPS and temperature]

I had the same observations when I was in Maldives two weeks ago. But in wild, temperature fluctuates throughout the day, and according to tidal flow. Fish and corals can adapt because other conditions are optimum. But in tank, which is just a tiny representation of nature, the smallest amount of stress and be detrimental.

I had the same observations when I was in Maldives two weeks ago. But in wild, temperature fluctuates throughout the day, and according to tidal flow. Fish and corals can adapt because other conditions are optimum. But in tank, which is just a tiny representation of nature, the smallest amount of stress can be detrimental.

[tank designed for easy water change]

Hi reefers, I am planning a new tank, and was wondering about a design that would make WC easy. My idea is to have a drainage pipe at centre of bottom glass, and fit a pipe with ball valve. Above, place an egg crate, plastic sieve and topped off with No 3 sand. Over time, dirt will collect below egg crate via gravity. By opening valve, I will be able to change water and remove mulm. Will this work? I need to find method that will not aggravate my bad back. Thanks in advance.