roidan

but then now u put the AJ....next time put the AT....will have potential stress leh.... be careful when u really add the AT in future....got the AJ waiting to slash it..hehe oh..collecting tonight ah...okok... good luck..hehe

ooops

never mind...if you and your wife got ATcraving again...can hop over and quench the AT desire...let u see until u shiok then go back..

I think what he bought was the Acanthurus Japonicus...hehe

condolences

shhhhhhhhhhh? gem tang is nice tang what...what's there got to shhhhhhhh about

holding one injector housing in my hand tat's all for today

yeah..i agree with deepblue that this may be an isolated case... but in any manufacturing/fabrication process.....there are always rates to failure.... maybe the ratio of failure rate is higher in one brand than another...all these will only be known to manufacturers.... even the best equipment can come out of the best factory faulty....just that the odds are maybe one in hundreds of thousands pieces compared to one in every thousand pieces of other brands

the parallel performance.. of coz things may happen like 2 pumps not working at the same time....ie..whole circuit trips...but we can minimise small *ooops* like an isolated pump failure when we have more parallel circuits in our system...be it return flow....cooling loops or other vital equipment

parallel arrangement..... either one pump is seized...the other pump still pushes water through the pipeline without going thru the other pump..... but rather than sharing the same return pipeline as shown...i rather have each pump to its own return pipeline..which is what i am doing now....my eheim1262 has the right side return pipe and the resun md55 has the left side return pipe....

i have been thinking....if it is the follower pump that is faulty....the first lead pump can still push water thru to spin the follower's pump impeller and bring water to the system.....but if it is the lead pump that is faulty...the follower pump may have to work harder through the *impeded* suction side to pull water....past the lead pump's impeller to draw water before pushing out to the system.... personally i dun prefer this pump arrangement in series

the combined perfomance

actually now such things happening like a seized pump for a chiller or return pipeline...maybe if we use 2 pumps....the possibility of 2 pumps faulty at the same time is reduced.....Mr Murphy have to really work harder to create problems for us.... something i learnt last time...connecting pump in series....

i will be selling my resun md55 soon..... scared liao....before this incident of md40..i have been using a 100W circulatory fan to blow the resun md55 from the back...yet still so hot...lol.... or maybe keep it for water changes say use twice a year since i changing water at about half year intervals....then my maid no need carry pails from the mixing tub in the bathroom and dump in the sump....i can use the resun md55 to pump water right to the sump for water change i wouldn't say it's a goodfornothing pump though...because it does deliver good water pressure....just that now this happens...there is a big question mark on the safety of the pump

somehow the iwaki version of the pumps run cooler than the resun...eg iwaki md55 vs resun md55....i touched the iwaki md55 at a fren's place before....warm but not hot...but i touched my resun md55 running one of my return pipes...it is very hot.... can be down to ..material quality......fabrication quality of the parts even though resun tries to clone the iwaki. i opened both pumps before to kaypoh...the iwaki parts are very nicely fabricated and moulded....the resun parts seem more crudely finished.

for UPS runtime can refer to this url... http://www.apc.com/products/runtime_for_ex...m?upsfamily=165 their lowest wattage scenario is 50W draw.....so if we just use them to power our streams...will be even lower than 50W draw

when running external pumps...i think i trust only iwaki or other industrial brand name chemical pumps.... generally they dun cut corners in their pump materials

now i know why my instinct told me to put a big fan behind the resun md55... gee...heng your UPS alarm loud enough to wake you up...... Mr Murphy came to visit you......and left without much damage luckily suddenly it feels like Final tank Destination kind of scenario for our fishes/corals

it's ok lah..do what is humanly possible....the rest leave to fate

mine 28

yeah...i was studying there some 13-14 years ago...and also heard that bishan was formally a cemetary.....also got stories about headless clocktower figure roaming at night....lol... but i seriously think the authorities should cut all the red tape and do something fast......people are starting to use MRT platform as suicide avenues already

no problem... since clownfishes are almost iconic to this hobby....this info is very helpful to for clownfish ID doubts

very little black markings compared to some other true perculas....but still true perculas nonetheless... so that's why i say...those with heavy black markings are always true perculas....but those with no heavy black markings may also be true perculas.... dun have alot of black markings doesnt mean they are false clowns

Perculas quite often have have a pure bright orange iris around the black pupil