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Hi, I have a Brilliant White Hammerhead coral, but whilst it is growing well, it has darkened in colour to a light brown. Any ideas on why this would be or how to reverse this? I have good lighting (2 x 250w MH), and a calcium reactor working in the system. Thanks!

Thanks, they are all the same thing!

Hi, I have these things growing everywhere in my tank, on the walls, in the sump, on the pumps. I have no idea what they are, can anyone help? The pics arent great sorry!

Hi, I've acquired a 50L tank that I'm intending to setup as a quarantine tank for my 800L. Question is, what should go in the tank to maintain the healthy bacteria after cycling? Thanks!

Can the PH be monitored/controlled through a system using a digital Ph meter/solenoid/calcium reactor/CO2 Bottle?

I'm checking my Ph in the evening with lights on. It has always been between 7.8 and 8.2, I cant seem to get it to stabalise between the 2 points. The temp is stable at 24degrees. The nem is alive, and seems to have picked back up slightly. I hope that with the lage water chage, I can get...

So... what a rubbish few days I've had! I think the nem retracting back was a sure way of telling me that something wasnt right in there, and I should have read the signs better...... After I wrote the above, I rechecked my levels to find that the Ph had spiked to 8.4, and that the NitrAtes...

I have- Ammonia- 0 Nitirates- 0 Nitrites- 0 Ph- this seems to fluctuate between 7.8 - 8.2 SG was also a little high- it was 1.026, I've gradually reduced it to 1.024

I have 2 x 250W metal halides. I'm just a crap photographer!

Hi, I bough the below nem from my LFS about 6 weeks ago, it was doing really well for the first 5 weeks or so in the tank, it's tentacles were fully extended it seemed to like its location. It moved itself into a new area of the tank, not too far from where it was, and over the course of 3-4...

Managed to get him out, hidden in a piece of rock. Got a pic (hopefully this will attach ok).... Not as black or as sinister looking as first thought, but still like to know what he is....

Hey guys, I was just tank gazing as normal and noticed a cleaner shrimp moving about unusually. Attached to him and munching away quite merrily was this big black crab! I have no idea where he came from, and have not seen it before- a rather unpleasant hitchhiker. It looked almost tarantula...

This might seem like a weird question, but is it possible that my Chalk Goby is aiding the shrimps in hiding while they molt???? There are now 4 mounds of sand that the chalk goby has created, I'm just wondering if the shrimp are underneath them?? Clearly don't want to disturb them, but...

ok thanks, I hope that is the case. How long does the process take?

They were drip acclimatized over 2 hours, only had the cleaner shrimp for 3 days, and the fire shrimps 2 days. I'm not 100% that the bits floating around aren't molts, but would have thought that they would need to be settled in the new tank for a longer period than they have been before they molt?

Hey Guys, I recently bought 2 cleaner shrimp and 2 fire-shrimp for my tank (800Ltrs), however, since putting them in have not seen them and have seen "bits" floating around the tank (the odd red/white leg). I also saw what looked like the shell from one of them. So I naturally assume that one...

Decided to apply some Aptasia X, and removed one of the rocks from the tank until its cleared. Seems to have worked so far as the little beggars have all but gone.

This may be a stupid question, but how is it dealt with in the wild? I assume that reefs aren't taken over by them, so something must be keeping them in check other than chemical intervention?

I all, just need some advice. I bought some more live rock for my tank today, and have noticed that a few of the pieces have Aiptasia on them. Clearly not good, so I'm just investigating the best solution of getting this under control before it gets out of hand and they spread. I've read...

I have the API kit. I find that it is really tough to distinguish between the lower end of ammonia readings, and the difference between 5-10 on the NitrAte chart.

Its a new sump without question. The guys at my LFS have kindly loaned me a 4ft tank to act as a temporary sump while the new one is made. Getting the old one out was challenge enough, getting a new one back in will be the same, as the main tank is 6ft wide. Gonna need me some vertical jacks...

So my cycling was complete, water parameters looked good and the day was here 2 add my first fish to the tank. Good times! Went to the LFS and got myself 2 lively looking tank bred clown fish, and a chalkfaced Goby. Got home, put them in the tank using an acclimatizer, and things were looking...

at what point do you know that the cycling process is complete? I went through the shrimp process, and now have readings of: Ammonia-0 Nitrite-0 Nitrate-5 Ph 8.4 SG 1.026 I have been putting pinches of marine flakes in, to keep the bacteria fed! If complete, I'd like to begin stocking with a...

ok cool. My tank is approx 211 gallons (800 Litres UK) taking into account LR displacement. I'll pick up 7 raw jumbo shrimp and a mesh bag tomorrow. Thanks for the help!

Guys, Great advice. Will try out, and let you know how it goes, thanks very much! Jason