JBJ 28 Gallon Nano Owners Club

[Goldndoodle]

Sorry, my mistake - it is 85W Total - here's the link - http://shop.stevesleds.com/Nanocube-28-LED-Light-System-NC28RF.htm

 

[PeterBel]

Sorry, my mistake - it is 85W Total - here's the link - http://shop.stevesleds.com/Nanocube-28-LED-Light-System-NC28RF.htm

I am actually at 50% on channel 1 and 33% on channel 2. I do ramp up from 10% to 50% from 9am to 12pm then keep it at 50% until 4pm and dim it down to 0% in 4 hours.

Channel 2 start at 9:30a to 12:30p then stay at 33% until 4:30p and dim out until 8:30p

My fish are doing very well and all softies, polyps, zoas, Leather, torch, frogspawn and LPS in general.

SPS are stable but no real growth. They also bleached even with a ramp up of 4% per week at the beginning. No algae problem either.

Here what Steve Led's sent me as a recommendation:

That sounds like the issue. After the 8 week acclimation period, most people end up with the blue channel running at around 90%, and the white channel is around 60%-90%. Sounds like your corals are starving for light.

To determine how much light to provide your corals with, it is very important to watch your corals and their response to the LED light. Start off at less than half dimmed down, and see how the polyps respond after 5 days. If the polyps are balloon like and relatively clear, they need more light. If they are small and dark, they are getting too much light. If they are pure white, they likely have been bleached (blasted with too much light), and will take about 3 months to recover using a 30-40% light level. If they appear to be relatively normal, just let them adjust to the LED spectrum for another 3-5 days. After that, increase the intensity of the LEDs approx. 2-3% once every 3-4 days (or 1% every day) over the course of the next 2 months. If you rush this process, it is highly probably that you will bleach and could even kill your corals. Corals will take a minimum of 6 weeks to acclimate and adjust to the new brighter LED light after you have completed acclimating them. During this time their colors will enhance and sometimes change as they adapt. Sometimes browns will turn to blues, sometimes blues will turn to greens, etc. Every individual coral is somewhat unique and as it adapts its colors may change. When introducing new corals, you must restart this acclimation process, by bringing the light intensity down to less than half.

If i raise to the level they suggest, all my corals start to bleach. In fact, they start to bleach at ~55% and that's why i am at 50% and 33%. I still have corals that are in recovery from bleaching. I did increase the value by 4% a week, maybe 2% would work better?

I also added a moonlight that i use on a reverse schedule.

Good luck.

 

[Goldndoodle]

I did my upgrade back in March, then had to go out of the Country for work for 4 months from June - Oct. After I did the install, I was adding 1% per week, but backed off of that because I had a favia that was on the sand, bleach out. The favia is now back to normal. I was going to try to start increasing by 1% per MONTH increments.

I find Steve's reply interesting - I seriously doubt I could get to 90% on either without freaking something out - either corals or fish.

But on the other hand, the ratio of 90% blue to 60% white sounds like that might be something to try to keep balanced, while increasing intensity. That's a 3:2 blue:white ratio. As of right now, I'm at 40% blue 25% white, which would mean I'm a little heavy on the blue. To keep a 3:2 balance, I should drop the blues down to 37%.

BTW - I managed to keep the JBJ moonlights in tact when I did the Steve's upgrade. I had to move one of the JBJ moonlights because of the new fan placement, but I got them to work.

 

[PeterBel]

I agree that the reply was somewhat a surprise! I don't think i will ever go over the 50% i am at, but we never know! I might try to increase it again in a few weeks and see if i still have a bleaching problem.

I was adding 1% per week, but backed off of that because I had a Favia that was on the sand, bleach out. It's now back to normal. I was going to try to start increasing by 1% per MONTH increments.

I find Steve's reply interesting - I seriously doubt I could get to 90% on either without freaking something out - either corals or fish.

But on the other hand, the ratio of 90% blue to 60% white sounds like that might be something to try to keep balanced, while increasing intensity. That's a 3:2 blue:white ratio. As of right now, I'm at 40% blue 25% white, which would mean I'm a little heavy on the blue. To keep a 3:2 balance, I should drop the blues down to 37%.

BTW - I managed to keep the JBJ moonlights in tact when I did the Steve's upgrade. I had to move one of the JBJ moonlights because of the new fan placement, but I got them to work.

 

[geezers11]

I haven't been able to find anything on this yet, but half of my light went out this week and I don't know why. Any help you guys can offer would be great. The light is 4-5 years old and I'm just wondering if half of it went bad or what.

My white lights have been systematically going out--like a row per month. I called JBJ who did offer to fix it. She said when one light goes-the entire row follows (like Christmas lights). No doubt a bad design flaw.

I then asked if they could put in dusk/dawn lights alternately with the whites as the all-white is far too bright and washes everything out. She said, "Funny you asked as we get that request a lot. But we cannot do that as the dusk/dawn require independent drivers." Huh?

Anyway, the JBJ rep happened to be at my LFS where I bought it and he said he'd give it a try. I'll let you know if he can make it work.

However, it still isn't dimmable which is a nice option since we all have our favorite settings.

Will keep you posted.

BTW, anyone tried these? http://nanoboxreef.com/ It looks interesting and the cost isn't crazy.

 

[yasarnuman]

Hi Everyone,

I hava bought a 2 year old JBJ 28 Gallon Nano HQI tank , and the /transformer power cord for the moonlight leds was missing. Can any of you tell me the specifications of the transformer so that I can check if I can find one that is cheaper than buying the JBJ replacement one?

 

[Pokerman11]

Hi Everyone,

I hava bought a 2 year old JBJ 28 Gallon Nano HQI tank , and the /transformer power cord for the moonlight leds was missing. Can any of you tell me the specifications of the transformer so that I can check if I can find one that is cheaper than buying the JBJ replacement one?

3V DC - 380mA is what is on my moonlights now. Nothing special about the transformer block at all - just find something that matches the plug.

 

[yasarnuman]

3V DC - 380mA is what is on my moonlights now. Nothing special about the transformer block at all - just find something that matches the plug.

Thanks pokerman. I have bought a 3V transformer from amazon, but it didn't work. I have even showed it to few electricians, and they were no help either. I guess the problem was the mA. I will try to find one that matches that too. Also, the issue might be with leds.

Thanks again.

 

[PeterBel]

Thanks pokerman. I have bought a 3V transformer from amazon, but it didn't work. I have even showed it to few electricians, and they were no help either. I guess the problem was the mA. I will try to find one that matches that too. Also, the issue might be with leds.

Thanks again.

Check the polarity, it might be why it didn't work.

 

[reefsahoy]

Whenever the stock pump starts it makes a "clack" sound. Short of eliminating the wave maker, what have you guys done to resolve this? What other pumps thats designed for the constant on/off switching have you guys decided to use also and are they quiet? Thx

 

[SeattleReef]

I believe that clack sound may be due to a broken shaft, you should open up your pumps and make sure the ceramic shaft is in one piece. I had this problem with both of my impeller shafts.

 

[ferchb]

Hood Screws

Hood Screws

I have had the 28 led pro for about a year. The guy I bought it from had disconnected 2 of the light strips because he thought the lighting was to strong. I want to go in and replace some of the leads with royal blues and reconnect the strips. All the screws holding the clear shield in place are corroded. I've tried to find replacements online but haven't seen any. Does anyone know where I can find them or what size they are to get a comparable at a hardware store? Does anyone have any tricks to prevent the corrosion?

 

[Jrambo88]

If you guys don't mind could people start posting pics of their tanks. I want to check out your Aqua scapes

 

[SeattleReef]

I have had the 28 led pro for about a year. The guy I bought it from had disconnected 2 of the light strips because he thought the lighting was to strong. I want to go in and replace some of the leads with royal blues and reconnect the strips. All the screws holding the clear shield in place are corroded. I've tried to find replacements online but haven't seen any. Does anyone know where I can find them or what size they are to get a comparable at a hardware store? Does anyone have any tricks to prevent the corrosion?

I'm to lazy to look but the exact answer you are looking for is in this thread... I remember someone saying it 1/2'' #2 stainless steel screws or maybe #4, but that it worked. My screws are starting to rust a little too.

Also my clear light hood protector is starting to crack where the screws attach. I've opened the top many times and it must not like that.

 

[ferchb]

Yeah I went through and found someone posted 1/2" #4 stainless screws. Apparently I have one that's stripped so I haven't gotten very far. Thinking of changing out some of the white leds for a combo of royal blue and blue. It would be easier to do it all at once.

 

[SeattleReef]

I had two strips that went out a few weeks back but JBJ replaced them. However I'm going to take the two dead strips and also make them royal blue, blue and maybe UV. Then once I get it to work switch out two of the original strips which would then five me 4 strips of new lights with one 1 being original. A while back I posted a file that showed how I was thinking about replacing all 25 14k lights for a better color spectrum. However for now I have these two strips not in the tank that I can play with.

 

[ferchb]

Yeah I remember reading your thread. I wasn't looking to replace all of mine just the two unplugged threads and just spread them out. I thought about putting in two uv but I don't know how much difference one or two leds would make. I figured by replacing the 10 the light will be stronger since the strip were disconnected and I'm only out $20.

 

[SeattleReef]

Did you figure out what LED diodes you need to buy? I can't remember what the mA is.... 700 is what I think I read. I was also thinking about one red diode and one green diode on each strip.

 

[joker1857]

Just finished reading 7 years worth of posts and what a wild ride that was. I got a great deal on a cf quad model. I know its not the best lighting option but should work with the easier corals im planning. I just have one question i didnt see addressed in the thread. I would like the hob-1skimmer and the cpr aquamax small fuge. The two together measure out to 20.5in which is to big to fit on the back. Without losing the media tray is there a good fuge/skimmer combo? If i can only fit one which one is more desirable? Thanks for the help in advance.

 

[Jrambo88]

Hey any of you jbj owners, I just set up my 28 gal and I bought the upgraded in tank media basket, what skimmer can I also get that this tank will accommodate both.