Forum: Reef
03-21-2002, 12:55 AM
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Replies: 13
Views: 3,091
Can't get PH up!
Hi,
Excessive magnesium concentrations can cause the alk to drop and your pH to become unstable. The reason is because magnesium precipitates when magnesium ppm is too high and it brings the alk...
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Forum: Reef
03-20-2002, 06:29 PM
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Replies: 13
Views: 3,091
Can't get PH up!
Hi,
I would be interested in your alk values. What ball park number do you think they are at ?
Also, how are you measuring your pH ? pH meter ? Test kits ?
BTW...have you ever kept...
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Forum: DIY
03-08-2002, 07:34 PM
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Replies: 6
Views: 2,141
Titus, Victor, Shane and anyone else interested.
Hi,
Yah...I've been siting on since you wanted to build a controller. I was waiting for the calculators to go on sale....then I got busy with other stuff.
The beauty of TI calculators is that...
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Forum: Reef
03-08-2002, 01:26 AM
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Replies: 10
Views: 2,592
Who's Using Dolomite Sand??
Hi,
I would get a magnet and run it through the stuff. I would also phone up the manufacturer and ask them for a composition analysis. If it looks like it is mostly domolite, then it should be...
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Forum: DIY
03-08-2002, 01:16 AM
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Replies: 6
Views: 2,753
end caps for 96 watt PC's
Hi,
600V 1A....well, PCs are around 500mA to 600mA of lamp current...so that's where I get that from - it is also average current. Obviously, if it was a VHO...than a 1.5 or 2 A wire/socket is...
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Forum: DIY
03-08-2002, 01:09 AM
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Replies: 6
Views: 2,141
Titus, Victor, Shane and anyone else interested.
Hi,
Same problem with Titus...really tied up with school and work. I do enough electronic stuff at work that I really don't want to put myself up to a major project like this.
But here...this...
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Forum: DIY
03-07-2002, 09:32 PM
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Replies: 6
Views: 2,753
end caps for 96 watt PC's
Hi,
j&Ls = $9.95 for regular...I think $15 or $20 for waterproof.
Yah...japanese ones are harder to find. The german ones are easier to find.
As for connectors instead of endcaps...its your...
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Forum: DIY
03-07-2002, 09:17 PM
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Replies: 6
Views: 2,753
end caps for 96 watt PC's
German or Japanese PC sockets ?
You can get those from most lighting outfits and J&Ls.
- Victor.
[ 07 March 2002, 17:17: Message edited by: reefburnaby ]
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Forum: Reef
03-07-2002, 09:15 PM
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Replies: 7
Views: 1,733
DT's are in
Huh ! Big Al's had DT for years...
- Victor.
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Forum: Reef
03-07-2002, 09:12 PM
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Replies: 10
Views: 2,592
Who's Using Dolomite Sand??
Hi,
I use domolite for about 6 months now....seems fine.
I won't recommended unless you are short in cash or you like to experiment with fire. If all the facts are known and you understand...
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Forum: DIY
03-06-2002, 03:07 PM
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Replies: 19
Views: 3,804
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Forum: DIY
03-06-2002, 01:19 AM
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Replies: 19
Views: 3,804
make your own rock?
Hi,
$80 for 50lb of Caribsea in rock form from J&L. BTW...that's what I used.
- Victor.
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Forum: DIY
02-25-2002, 04:37 AM
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Replies: 3
Views: 1,585
re: letting the smoke out.
Darren,
As for the scorching...well, I had my 110W PC running for two years and I had it attached to wood (unfinished pine). The ballast is an WH5 and no burn marks (these guys run really...
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Forum: Reef
02-25-2002, 04:36 AM
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Replies: 5
Views: 1,411
Can I buy some RO/DI water off anyone?
Hi,
I used to get my water from Super-store at $2.88 for a 18.1 litre jug (the water cooler kind). I just got tired of getting water for top off ... every two weeks.
- Victor.
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Forum: DIY
02-25-2002, 02:37 AM
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Replies: 16
Views: 2,955
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Forum: DIY
02-24-2002, 10:02 PM
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Replies: 16
Views: 2,955
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Forum: Reef
02-24-2002, 05:32 PM
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Replies: 18
Views: 3,121
Disgusting brown goo
Hi,
Its hard to say if it is dino or diatoms. Both are slimy and both form jelly mats, but I through dinos where brown or red and diatoms were brown or gold. Really doesn't matter....
...
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Forum: Reef
02-24-2002, 05:37 AM
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Replies: 14
Views: 3,139
Montipora Self Destructed!
Hi,
With my brief experience in SPS, I have found that lighting, water flow, competition and food can cause RTN. I am assuming that you got the lighting and food down...so you may want to check...
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Forum: Reef
02-24-2002, 05:29 AM
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Replies: 7
Views: 1,535
Photo period for new LR
Hi,
My reasoning for turning off the lights is that I don't know if my rocks have been cured properly. They may have been in the curing tank for 1 week. So, there might be some die off in the...
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Forum: Lounge
02-24-2002, 01:35 AM
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Replies: 4
Views: 1,601
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Forum: Reef
02-24-2002, 01:25 AM
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Replies: 7
Views: 1,535
Photo period for new LR
Hi,
IMHO, I would keep the lights off and turn the skimmer on full blast. Although the rocks may be cured, your tank/sand is not cured. So, I would also monitor the nitrate, nitrite and ammonia...
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Forum: Reef
02-24-2002, 01:12 AM
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Replies: 18
Views: 3,121
Disgusting brown goo
Hi,
IMHO, the brown stuff with bubbles is more likely to be diatoms...just lots of diatoms. It really doesn't matter - the solution is the same. I had the same problem about 3 months ago. My...
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Forum: DIY
02-23-2002, 02:16 AM
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Replies: 16
Views: 3,697
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Forum: DIY
02-22-2002, 01:03 PM
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Replies: 20
Views: 8,239
soft start for powerhead
Hi,
Rather than digging in to the equations, lets get some trends.
1) Using a Step response to turn on the power supply. In this case, the current will overshoot and have exponential decay...
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Forum: DIY
02-22-2002, 01:11 AM
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Replies: 20
Views: 8,239
soft start for powerhead
Hi,
I am being a bit picky, but isn't it V(t) = sqrt(2) * 120 * sin(2 * pi * 60 * t) ?
As for soft starting, motors look like inductors and during the initial power up...it looks like a dead...
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