Un scurt update, din pacate fara poze inca
Camera IP urmeaza sa o instalez undeva pe la inceputul lui august.
Am mai achizitionat ceva ciortani
- 1 Achilles Tang (Acanthurus achilles)
- 2 Firefish (Nemateleotris magnifica)
- 4 Longfin Fairy Wrasse (Cirrhilabrus rubriventralis)
- 2 Yellowfin Flasher Wrasse (Paracheilinus flavianalis)
Din pacate ultimi 2 au trecut in vesnicele plaiuri ale vanatorii (pescuitului)

i-am gasit pe amandoi pe covor linga acvariu.
Oricum unul din ei nu cred ca supravietuia nici in acvariu, innota haotic si clar nu era in apele lui.
Coralii merg binisor, din cei 15 pe care i-am introdus acum vreo luna mi-a murit unul singur, in doua zile s-a albit complet, o acropora.
Habar nu am de ce, restul coralilor sint ok, unii au crescut spectaculos, altii au crescut normal sa zicem.
Mosu mi-am mai adus doi corali, nu stiu exact ce sint, o sa ii identificam cand o sa pun poze. Mai am in plan o achizitie de inca 15 corali,
undeva la inceputul lui august.
In rest bazinul sa zicem ca merge bine, fosfatii sint constant 0,003 in ultimele saptamani, iar nitratii undeva intre 0,5 si 1. Calciul 450, magneziul
1470, KH 8, doar pH-ul mi-a facut ceva figuri, in ultima perioada il am undeva intre 7,85 si 8,05. Pentru asta ar fi 2 explicatii pe care le-am gasit
intr-un articol de-al lui Randy Holmes-Farley:
- din cauza folosirii reactorului de calciu
- din cauza a prea mult CO2 in sufragerie
Un citat din articolul lui Randy:
"Low pH Problems
As described above, low pH problems are those where the pH is below 7.8. That is, where the daily pH low drops below 7.8. Of course, if the pH hits 7.9 you may still want to raise it, but the need is not so immediate. There are three things that commonly result in low pH, and the solution to each of them is different. Of course, there's nothing to prevent a tank from having all three!
Low pH due to CaCO3/CO2 Reactors
The most common cause of low pH in a reef tank is the use of a calcium carbonate/carbon dioxide reactor. These reactors use acidic carbon dioxide to dissolve calcium carbonate, and the effect is to deliver a substantial but transient amount of acid to the tank. Ideally, the carbon dioxide is blown back off of the tank after it has been used to dissolve the CaCO3. In reality, however, this process does not go to completion, and CaCO3/CO2 reactor tanks almost always run at the low pH end of the spectrum.
The solutions that follow assume that the reactor is properly adjusted. A maladjusted reactor can drive the pH down even lower than usual, and in that case, proper adjustment is the first step. How to set the various parameters of a reactor is beyond the scope of this article, but from this standpoint, you do not want the pH or the alkalinity of the effluent to be too low.
Many approaches have been suggested, with varying success, to minimize the low pH problem encountered with CaCO3/CO2 reactors. One is to use a two-stage reactor that passes the fluid through a second chamber of CaCO3 before releasing it to the tank. Dissolving additional CaCO3 has the effect of raising the pH, and also raising both the calcium and alkalinity levels in the effluent. This approach seems to be successful at raising the pH of the effluent, but it cannot raise it all of the way to tank pH, and the low pH problem does not completely disappear.
Another approach is to aerate the effluent before it is delivered to the tank. In this case, the goal is to blow off the excess CO2 before it gets to the tank. This approach can work in theory, but typically does not because not enough degassing time is permitted before the effluent enters the tank. Another concern of this approach is that if it really were successful at raising the pH, the supersaturation of CaCO3 in the effluent might get high enough to cause reprecipitation of CaCO3 in the reactor, fouling it and reducing it's effectiveness.
A final approach, and probably the most successful, is to combine the CaCO3/CO2 reactor with another alkalinity supplementation scheme that raises pH. The most useful method in this application is limewater. In this situation, the limewater is not being used to provide large amounts of calcium or alkalinity, but to soak up some of the excess CO2, and thereby raise the pH. The amount of limewater needed is not as large as for full maintenance of calcium and alkalinity. You can also put the limewater additions on a timer to add it only at night and early morning when the daily pH lows are most likely to be problematic. The limewater addition could also be on a pH controller, so that it is only added when the pH gets unusually low (such as below pH 7.8 or so).
Low pH Due to High Indoor Carbon Dioxide
High indoor carbon dioxide can also apparently lead to low pH problems in many tanks. Respiration by people and pets, the use of un-vented appliances burning natural gas (e.g., ovens and stoves) and the use of CaCO3/CO2 reactors can lead to high indoor carbon dioxide levels. The level of carbon dioxide can easily be more than twice that of exterior air, and this excess can substantially lower the pH. This problem is especially severe in newer, more airtight homes. It is unlikely to be a problem in homes like mine where you can feel the wind blowing around old window frames.
Many aquarists have found that opening a window near the tank can result in a significant rise in pH within a day or two. Unfortunately, those aquarists living in colder climates cannot readily open windows in the winter. Some have found it useful in these situations to run a pipe or tubing from the outside to the air input of a skimmer, where fresh, exterior air is rapidly mixed with the tank water.
Finally, the use of limewater in these situations is also appropriate. In fact, limewater may be more optimally used in this situation because the tank would be less likely to experience the undesirably high pH that sometimes accompanies limewater use. While limewater is the alkalinity supplement most potent at raising pH, other high pH additives would also suffice. Supplements based on carbonate, for example, would be very useful in this situation, while bicarbonate would not be. As a commercial example, the original B-ionic would be better than the newer version. For home brews, washing soda (sodium carbonate) would be better than baking soda (sodium bicarbonate).
Low pH Due to Low Alkalinity
Low alkalinity can also lead to low pH. For example, if alkalinity is not supplemented as fast as it is removed by calcification, the pH will likely drop. This drop will happen with all alkalinity supplementation schemes, but will be most observable using schemes that do not themselves raise pH (like CaCO3/CO2 reactors or bicarbonate). In this situation, the obvious solution is to add more alkalinity in some fashion."
Si aici aveti articolul integral:
http://www.advancedaquarist.com/2002/6/chemistry
(dupa cum vedeti am respectat regulile citarii, asa ca nu este plagiat

)
Dupa parerea mea cred ca in cazul meu problema este de la reactorul de calciu, prea mult CO2 nu cred ca am pentru ca aerisesc destul de des
si in plus acvariul este in sufragerie, care este open space, comunica si cu scara si cu un hol si cu bucataria. Pina acum foloseam 12 ore reactorul de
calciu (ziua) si 12 ore Kalkwasser sttirer (noaptea), amandoua in acelasi timp cu autocompletarea cu apa osmozata. Asa cum m-am contrazis cu stiti
voi cine pe un alt forum (care imi spunea ca nu e nevoie sa folosesc si reactor de calciu si Kalkwasser) se pare ca folosirea kalkwasserului ajuta la pastrarea
pH-ului. Drept pentru care in seara asta am modificat timpii, si acum folosesc kalkwasserul 15 ore si reactorul de calciu 9 ore. In ultimele 3 zile am aditivat
manual din kalkwasser si in timpul zilei si am reusit sa ridic usor pH-ul. Ramane de vazut daca va functiona automat.
O zi buna,
Dragos